4 research outputs found
Asexual reproduction: an alternative for the propagation and conservation of papaya (Carica papaya L.) native to Guerrero, Mexico
Objective: To evaluate the effect on the rooting of Carica papaya L. cuttings using three different substrates and varying the length of the vegetative material
Design / methodology / approach: A completely randomized design with a 2 脳 3 factorial arrangement was used. Herbaceous cuttings of 30 and 40 cm in length were collected in March 2018, from lateral branches from native papaya plants (Carica papaya L.) from various regions of the state of Guerrero. The stakes were placed in different substrates: 1) sand, 2) Peat Moss庐 and 3) a mixture of sand and Peat Moss庐 (70:30, v / v). Sixty days after sowing, the rooting percentage, root length, plant height, stem diameter, number of leaves, crown diameter, weight of fresh biomass, weight of dry biomass, fresh weight of root and root dry weight. With the data obtained, an analysis of variances and a mean comparison test (Tukey, p?0.05) were performed.
Results: The 40 and 30 cm long cuttings showed 60 and 50% rooting, respectively, being those plants where 40 cm cuttings were used, consistently taller, with a greater number of leaves, crown diameter and greater length of root. Of the three substrates used, sand was the best for the rooting of papaya cuttings, since in it plants with significantly higher fresh biomass weight were developed (p?0.05).
Study limitations / implications: It is important to continue the study into the flowering and fruiting stages.
Findings / conclusions: The proposed protocol allows the rooting of papaya cuttingsObjective: Evaluate the effect of three types of substrate and different shoot lengths onthe rooting of Carica papaya L. shoots.Design/ methodology/ approach: This experiment followed a completely randomizeddesign with a 2脳3 factorial arrangement. Shoots of 30 and 40 cm of length werecollected in March 2018 from the lateral branches of papaya plants (Carica papaya L.)native to various regions of Guerrero. Shoots were placed in different substrates: 1)sand, 2) Peat Moss庐, and 3) sand and Peat Moss庐 mixture (70:30, v/v). Sixty days afterplanting, rooting percentage, root length, plant height, stem diameter, number of leaves,crown diameter, biomass fresh weight, biomass dry weight, root fresh weight, and rootdry weight were evaluated. Data were analyzed through an analysis of variance and amean difference test (Tukey, p?0.05).Results: The rooting of 40- and 30-cm shoots was 60 and 50%, respectively. Plantswith the highest height, number of leaves, root length, and crown diameter derived from 240-cm shoots. Sand was the best substrate for rooting, where plants with higher freshbiomass were significantly developed.Study limitations/ implications: Continue study during the flowering and fruitingstages.Findings/ conclusions: This protocol allows the rooting of papaya shoots
Rendimiento del ma铆z (Zea mays L.) en respuesta a la fertilizaci贸n con nitr贸geno, f贸sforo y silicio al suelo
En el estado de Guerrero, el ma铆z (Zea mays) se siembra en diferentes condiciones ed谩ficas y clim谩ticas, en altitudes que van desde el nivel del mar hasta los 2880 m de altitud, principalmente en r茅gimen de temporal y por productores que utilizan ma铆ces nativos y mejorados. El objetivo fue evaluar el efecto de la fertilizaci贸n con nitr贸geno y f贸sforo en combinaci贸n con silicio en los componentes de rendimiento del cultivo de ma铆z; bajo la hip贸tesis de que al menos una f贸rmula de fertilizaci贸n y la aplicaci贸n de silicio al suelo generan un efecto positivo en el tama帽o de la mazorca y el rendimiento de grano de ma铆z. La fertilizaci贸n consider贸 dos factores; primero la f贸rmula de Nitr贸geno, Fosforo y Potasio (N-P-K) con dos niveles (90-60 00 y 60 40 00); el segundo fue la fertilizaci贸n de silicio (Si) con tres niveles (sin Si, Fermiphos y Silifosca庐), cuya combinaci贸n origin贸 seis tratamientos; los cuales se distribuyeron en un dise帽o experimental de bloques al azar con tres repeticiones. La fertilizaci贸n N-P-K no afect贸 estad铆sticamente las variables evaluadas; excepto el di谩metro que, fue estad铆sticamente diferente y se increment贸 en 2% con 90-60-00. La aplicaci贸n de silicio (Fermiphos y Silifosca庐) aument贸 m谩s de 12% la longitud y 6% el di谩metro de la mazorca y 24% el rendimiento de grano. La fertilizaci贸n con 90-60-00 + silicio (Fermiphos y Silifosca庐) increment贸 de 8 a 32% el tama帽o y rendimiento; mientras que, la fertilizaci贸n con 60-40-00 + silicio (Fermiphos y Silifosca庐) super贸 de 4 a 28% los par谩metros evaluados. El incremento de la f贸rmula de fertilizaci贸n tuvo impactos m铆nimos y no constantes en el tama帽o de la mazorca. Pero, la aplicaci贸n de Silifosca庐 o Fermiphos combinada con la fertilizaci贸n N-P-K favoreci贸 cambios positivos en el tama帽o de la mazorca y rendimiento de grano con 90-60-00 y la adici贸n de Silifosca庐
First report of Polyphagotarsonemus latus (Banks) (Acari: Tarsonemidae) in apaxtleco chili (Capsicum annuum L.) cultivated in greenhouse
Objectives: To generate information about a new host of the Polyphagotarsonemus latus (Banks) mite, and to understand the damages caused by the cultivation of apatlexco chili pepper (Capsicum annuum L.) in the northern region of the state of Guerrero. Design/Methodology/Approach: The identification of the mite was carried out through taxonomic keys and the damages caused in vegetative shoots, mature leaves and flower buds were described. Results: The P. latus mite was identified as causing important damage to the crops of aplaxtleco chili pepper grown in greenhouses in the state of Guerrero, Mexico, and this is the first report of this mite in the Aplaxtleco chili pepper crop grown in greenhouses in the state of Guerrero, Mexico. Findings/Conclusions: Economic income is obtained from the cultivation of aplaxtleco chili peppers, a characteristic crop of the municipality of Aplaxtla, in the northern zone of Guerrero; therefore, knowing the identity of the P. latus mite in the aplaxtleco chili crop will help to suggest effective control methods to obtain higher yields
First report of Polyphagotarsonemus latus (Banks) in Apaxtleco chili (Capsicum annuum L.) cultivated in greenhouse
Objectives: To generate information on a new host of the Polyphagotarsonemus latus (Banks) mite, and to know the damage caused to the Apaxtleco chili (Capsicum annuum L.) crop in the northern region of the state of Guerrero.
Design / methodology: The identification of the mite was carried out by means of taxonomic keys and the damages caused in vegetative shoots, mature leaves and flower shoots were described.
Results: The P. latus mite was identified causing significant damage to the Aplaxtleco chili crop grown in the greenhouse in the state of Guerrero, Mexico, and the first report of this mite in the greenhouse-grown Aplaxtleco chilli crop in the state is released. from Guerrero, Mexico.
Findings / conclusions. The cultivation of Aplaxtleco chili is a characteristic crop of the municipality of Aplaxtla, in the North zone and from which economic income is obtained, for this reason knowing the identity of the P. latus mite in the cultivation of Aplaxtleco chili will help to propose effective control methods for higher performance.Objectives: To generate information about a new host of the Polyphagotarsonemuslatus (Banks) mite, and to understand the damages caused by the cultivation ofApatlexco chili pepper (Capsicum annuum L.) in the northern region of the state ofGuerrero.Design/Methodology/Approach: The identification of the mite was carried out throughtaxonomic keys and the damages caused in vegetative shoots, mature leaves andflower buds were described.Results: The P. latus mite was identified as causing important damage to the crops ofAplaxtleco chili pepper grown in greenhouses in the state of Guerrero, Mexico, and thisis the first report of this mite in the Aplaxtleco chili pepper crop grown in greenhouses inthe state of Guerrero, Mexico.Findings/Conclusions: Economic income is obtained from the cultivation of Aplaxtlecochili peppers, a characteristic crop of the municipality of Aplaxtla, in the northern zone of Guerrero; therefore, knowing the identity of the P. latus mite in the Aplaxtleco chili cropwill help to suggest effective control methods to obtain higher yields