48 research outputs found
Láncszemek a homokkutatásrĂłl : Negyedik rĂ©sz – homoksivatagok hasznosĂtása 1975-1992 = Links to Sand Research : Part 4 - Utilization of Sand Deserts 1975-1992
Láncszemek a kecskeméti homokkutatásról Első rész 1958-1983 = Chains of sand research in Kecskemét. Part 1: 1958-1983
Ă–sszefoglalás: TartamkĂsĂ©rleteinkben 1955-84-ig az alábbi eredmĂ©nyekre jutottunk: NapraforgĂł tarlĂłzöldtrágyázási kĂsĂ©rletĂĽnkben a bimbĂłzás elĹ‘tti alászántás nĂ©mi termĂ©s-többletet eredmĂ©nyezett. A virágzás után alászántott napraforgĂł zöldtrágya termĂ©s csökkenĂ©st mutatott (Bauer, 1973). A foszfor műtrágya istállĂłtrágyás vetĂ©sforgĂłban akkor bizonyult jobbnak, ha a 3 Ă©vi adagot egyszerre adtuk (Bauer, 1971., 1973a). A szöszös-bĂĽkkönyös rozsos vetĂ©sforgĂłban a foszfor termĂ©s-növelĹ‘ hatása itt is akkor volt jobb, ha a 3 Ă©vi adagot egyszerre a zöldtrágya elĂ© adtuk. A P mĂ©rleg egyensĂşlyához 30 kg/ha/Ă©v P2OS hatĂłanyag vetĂ©sforgĂłban elegendĹ‘. A P műtrágyázás termĂ©sbiztonságot növelĹ‘ hatása pozitĂv volt (Bauer-Cserni,1984a), somkĂłrĂłs vetĂ©sforgĂłban elegendĹ‘nek mutatkozott 30 kg/halĂ©v P2OS hatĂłanyag a növĂ©nyek foszfor szĂĽksĂ©gletĂ©nek kielĂ©gĂtĂ©sĂ©re, ugyanakkor a somkĂłrĂł termĂ©snövelĹ‘ hatása műtrágyázás nĂ©lkĂĽl is jelentĹ‘s volt (Bauer-Cserni1984b). Rozs monokultĂşrában: a P tápanyag mĂ©rleg 25 kg/ha/Ă©v adagban már egyensĂşlyba kerĂĽlt. Az igen gyenge P-ellátottságĂş talajok a 60 kg/ha P2OS hatására már jĂł ellátottságĂş szint termĂ©s-eredmĂ©nyeit Ă©rtĂ©k el. A foszfor trágyázásnak 10-12 94-os hatása volt Ă©s utĂłhatása a P trágyázási mĂşlt fĂĽggvĂ©nye. A foszfor tápanyag ellátás a rozs termĂ©sbiztonság növelĂ©sĂ©nek egyik lehetĹ‘sĂ©ge az idĹ‘járási tĂ©nyezĹ‘kkel szemben (Cserni, 1982.,1983a.,1995). Kukorica monokultĂşrában: igen gyenge humusz tartalmĂş talajainkon a nagyobb P adagok esetĂ©n a foszfor migráciĂłjával is számolhatunk. A talaj AI-P2OS tartalmának 10 "mg/kg-mal valĂł növelĂ©sĂ©hez 90 kg/ha körĂĽli P2O5-re van szĂĽksĂ©g. MelioratĂv P trágyázás csakis a talaj heterogenitások kiegyenlĂtĂ©sĂ©re javasolt. A foszforral rosszul ellátott talajainkon tervezett termĂ©s foszfor igĂ©nyĂ©t meghaladĂł P trágyázás cĂ©lszerű, mĂg a jobb ellátottságĂşaknál már elegendĹ‘ a termĂ©ssel kivont P pĂłtlás /Cserni,1982.,1984) Bauer vetĂ©sforgĂł kĂsĂ©rleteiben: az egy adag műtrágya (30:15:15 kg/ha/Ă©v N.P2OS Ă©s K2O hatĂłanyag) 6, a duplája 4.5 mĂg a háromszorosa 3 GE/ha termĂ©snövekedĂ©st eredmĂ©nyezett. A 180 kg/ha-on felĂĽli tápanyag adagok már alig növeltĂ©k a termĂ©st Ă©s esetenkĂ©nt csökkentettĂ©k is azt. A termĹ‘Ă©v kiesĂ©ssel járĂł fĹ‘vetĂ©sű zöldtrágyázás mĂ©g pillangĂłsok esetĂ©ben is olyan termĂ©skiesĂ©ssel járt, hogy az homoktalajon vesztesĂ©ges volt (Bauer, 1976a.,1976b., 1979, Cserni-Bauer,1998). A tartamkĂsĂ©rletek igazolták, hogy az Ă©v kiesĂ©s nĂ©lkĂĽl közbeiktatott szöszös-bĂĽkkönyös rozst Ă©s somkĂłrĂłt cĂ©lszerűbb alászántás helyett feltakarmányozni, a tarlĂł Ă©s gyökĂ©r maradványokat leszántva gyűrűs hengerrel lezárni Ă©s másod növĂ©nyekkel hasznosĂtani ("kecskemĂ©ti mĂłdszer") (Bauer,1976., Bauer-Cserni 2002)
Láncszemek a kecskeméti homokkutatásról. Második rész - 1984-2002
Ă–sszefoglalĂł jellegű tanulmányom kĂ©t Ă©vtizedet felölelĹ‘ kutatĂłmunkám fĹ‘ terĂĽleteit Ă©s eredmĂ©nyeit mutatja be: RozsnemesĂtĂ©s, — vetĂ©sforgĂł Ă©s tápanyag-gazdálkodási kĂsĂ©rletek. — Hexaploid triticalĂ©k nemesĂtĂ©se. SzántĂłföldi növĂ©nyek Ă©s zöldsĂ©gfĂ©lĂ©k beltartalmi Ă©rtĂ©keinek vizsgálata. A csemegekukorica, paradicsom Ă©s, uborka hibrid vetĹ‘mag előállĂtásban a tĂşlzott tápanyag- (fĹ‘leg nitrogĂ©n), Ă©s tĂşlzott vĂzellátás, valamint hajtatott körĂĽlmĂ©nyek nem kedveznek a minĹ‘sĂ©gi vetĹ‘mag előállĂtásának. Ezzel szemben, viszont a kielĂ©gĂtĹ‘ kálium tápanyag, kisebb nitrogĂ©n Ă©s foszfor tápanyag mellett Ă©s szűkösebb vĂzellátás esetĂ©n is, jobb minĹ‘sĂ©gű vetĹ‘magot eredmĂ©nyezhet. KĂĽlönleges zöldsĂ©gnövĂ©nyek hazai honosĂtás, nemesĂtĂ©se Ă©s tápanyagigĂ©nyĂ©nek vizsgálata. A SOIL Ă©s SOILN modellrendszer alkalmazása a tápanyag kimosĂłdásban
Láncszemek a kecskeméti homokkutatásról : Harmadik rész — 2002-2004 = Links to Sand Research in Kecskemét : Part 3 2002-2004
Szabadföldi zöldsĂ©gtermesztĂ©sben a növĂ©nyek nagyobb tápanyagigĂ©nyĂ©nek következmĂ©nyekĂ©nt a talaj káros terhelĂ©sĂ©nek csökkentĂ©sĂ©re kell törekedni. A korábbi eredmĂ©nyeket is figyelembe vĂ©ve egy Ăşj szemlĂ©letű trágyázási rendszer kidolgozása vált szĂĽksĂ©gessĂ©. E környezetkĂmĂ©lĹ‘ trágyázási rendszer filozĂłfiája: a gazdaságos termĂ©sszintekre valĂł törekvĂ©s, melynek elemei: a növĂ©nyek trágyázása, a talaj közepes PK-ellátottságának elĂ©rĂ©se Ă©s fenntartása, lassĂş PK- feltöltĂ©s - a vetĂ©sforgĂł PK trágyázása, PK-trágyázás csak közepes vagy annál gyengĂ©bb PK-ellátottsági szinten, csökkentett talaj tápelem-ellátottsági határĂ©rtĂ©kek, növĂ©nycsoporttĂłl fĂĽggĹ‘ talaj tápelem-ellátottsági határĂ©rtĂ©kek, kisebb fajlagos tápelem-tartalmak, a tervezett termĂ©stĹ‘l fĂĽggĹ‘ fajlagos tápelem-tartalom. A N-igĂ©ny minĂ©l pontosabb kielĂ©gĂtĂ©se fontos a kimosĂłdás Ă©s környezetterhelĂ©s miatt. A PK tekintetĂ©ben a közepes szint elĂ©rĂ©se vagy fenntartása cĂ©lszerű. Homoktalajainkon A K-mozgásával is kell számolnunk
Effects of soil types and nitrogen fertilizer doses on some chemical characteristics of tomato, sweet corn and pepper
Our research project was aimed at the description of the nitrogen and carbon flows in soils and vegetable cultures. As a part of this project we made our experiments in the nursery garden of our Institute (Kecskemét College, Faculty of Horticulture), using irrigated and fertilized lysimeters. Three different soil types (sandy, alluvial and chernozem soils) were studied. At constant phosphorus and potassium fertilizer doses (P6o:K]2o), four different nitrogen doses (0, 60, 120 and 180 kg.ha-1 N) were used. Total N levels and other parameters were determined in two harvesting times in tomato (type K-549) and sweet corn (variety 'Spirit') as well. According to other parameters of the tested vegetables, organic acid contents increased in tomato berry on sandy and alluvial soils at higher nitrogen fertilizer doses. Sugar content was higher in tomato grown on alluvial and chernozem soils. Nitrogen doses decreased sugar contents in chernozem in the case of both vegetables. The increase in vitamin C levels of tomato in sandy soil was slight due to higher nitrogen doses. The highest sugar content in sweet corn was measured due to farmyard manure treatment. According to green and red pepper test plants, the effect of nitrogen fertilizer (ammonium-nitrate) and barnyard manure on crop mass seemed to be highly positive in our experiments
Effects of soil types and nitrogen fertilizer doses on some chemical characteristics of tomato, sweet corn and pepper
Our research project was aimed at the description of the nitrogen and carbon flows in soils and vegetable cultures. As a part of this project we made our experiments in the nursery garden of our Institute (Kecskemét College, Faculty of Horticulture), using irrigated and fertilized lysimeters. Three different soil types (sandy, alluvial and chernozem soils) were studied. At constant phosphorus and potassium fertilizer doses (P6o:K]2o), four different nitrogen doses (0, 60, 120 and 180 kg.ha-1 N) were used. Total N levels and other parameters were determined in two harvesting times in tomato (type K-549) and sweet corn (variety 'Spirit') as well. According to other parameters of the tested vegetables, organic acid contents increased in tomato berry on sandy and alluvial soils at higher nitrogen fertilizer doses. Sugar content was higher in tomato grown on alluvial and chernozem soils. Nitrogen doses decreased sugar contents in chernozem in the case of both vegetables. The increase in vitamin C levels of tomato in sandy soil was slight due to higher nitrogen doses. The highest sugar content in sweet corn was measured due to farmyard manure treatment. According to green and red pepper test plants, the effect of nitrogen fertilizer (ammonium-nitrate) and barnyard manure on crop mass seemed to be highly positive in our experiments
The impact of potassium fertilization on development and magnesium content of celery
Our experiments were carried out in 2017, in our study garden. Celery test plant was used, in lysimeter-type, large-sized breeding pots, in four series. Four different treatments of potassium fertilizer and manure was used. The results show that potassium fertilization in celery test plants increased potassium in a dose-dependent manner. Potassium fertilizer decreased magnesium nutrient content in the leaves and roots. Our results call attention for magnesium supplementation in parallel with potassium fertilization. Positive effect of potassium on tuber growing was also shown. Total plant weight was the highest after the organic manure treatment
Results analysis of irrigation water located mainly in county Bács-Kiskun
Ground water samples, collected mainly in Kecskemét and its outskirts, were analysed in the laboratory of Faculty of Horticulture (Kecskemét College). Depending on the depth three categories of the sprinkling water samples were formed: 10-30, 31-70 and 71-275 m, respectively. Chemical analysis of 103 water samples showed the decrease in the salt content with deepness (conductivity (EC) decreased from 1116 to 682 pS.cm' 1 in the deepest groundwater samples). It was the result of the decrease primarily in sodium, hydro-carbonate and chloride contents in the samples. Acidity and alkalinity of the samples didn't change with deepness considerably in our samples. The levels of nitrogenous and phosphorous ions were low in almost all water samples. Ferrous, manganese and arsenic content was the highest in the middle deep water region (31-70 m depth). These results may reveal problems in the application of these water sources in agriculture, mainly in growing and irrigation because of high salt concentration, principally thanks to hydro carbonate and metallic ions. Acidic pre-treatment of these irrigation waters seems to be crucial
Investigation of Humus and Nitrate Content of Soil with Special Reference to the Nitrate Sensitivity
Horticultural production is of major importance in our region, as it contributes significantly to the supply of fruit and vegetables consumption of the population of the country. On soils with lower fertility and lower organic matter content, repeated nitrogen supplementation is essential during vegetation. However, the application of nitrogen in many areas is regulated. Among the most important physical and chemical properties of the soil, we investigated the organic matter and nitrate contents and followed their correlation, especially in the case of vineyards and fruit plantations. In three consecutive years, we determined the distribution of nitrate content and analyzed the risk of high nitrate levels in the surrounding soils. We suggest, that organic fertilization is extremely important in sandy soils to balance nitrate and other nutrient levels in the soil