THE USE OF LONTREL 300 HERBICIDE FOR CONTROLLING BROADLEAF WEEDS IN STRAWBERRIES

Broadleaf weeds are very harmful for strawberry crop because not all of them can be controlled by herbicides. For instance, Convolvulus arvensis can only be controlled just after emergence from the seed, otherwise this weed forms deep roots and cannot be controlled by any herbicide aftermath. The Lontrell 300 herbicide can control weeds from Compositae, Leguminosae, Solanaceae and Polygonaceae families. Our results showed that Lontrell 300 herbicide can be applied to strawberry crop at a rate of 300 ml per hectare in 300 liters of water. Moreover, our researches showed that it can be tank mixed with Goal 4F and Pantera herbicides

RESEARCHES CONCERNING WEED CONTROL ON POTATO

Potato is a very important crop in Romania, after corn and wheat and this is why this crop must be attractive for farmers through financial advantages and high yields that should feed the people. The using of herbicides is a compulsory measure for efficacy of this crop. In order to test some herbicides used for potato crop we have tested some herbicides at the Botanic Garden of University of Craiova, in 2017. There were used the following substances and rates: V1 – Stomp 5 l/ha; V2 – Stomp 6 l/ha; V3- Stomp 5 l/ha + 1 l/ha Roundup (tank mix); V4 – Stomp 5 l/ha + 1 l/ha Roundup (tank mix) and 3 l/ha Roundup, selective treatment on spots; V5- Roundup 1 l/ha, (two treatments) without any preemergent herbicide;V6 – Goal 4F 0,5 l/ha; V7 – Goal 4F 0,7 l/ha; V8- untreated control. The best results have been given by V1, 2 and 6 treatments, where there are not perennial dicots. Where Convolvulus arvensis and Cirsiumarvense are present there must be applied a 3.5 liters per hectare Roundup before potato emergence

PARTIAL RESULTS CONCERNING THE BEHAVIOR OF ENERGY WILLOW GENOTYPES IN CULTIVATED IMPROPER AREAS

The paper presents partial results recorded on some experimental fields with energy willow (Salix viminalis) for recovery of land unfit for agriculture. Lately appeared the need for comprehensive studies to identify optimal solutions for these lands, namely the selection of genotypes to exploit their productive potential, but also to be adapted on summers with high temperatures (above 35°C) and extremely dry, and the cold winters. This was an attempt to test in the conditions of 2015 Swedish energy willow genotypes approved for cultivation in Romania, genotypes that were compared to some Romanian clones and hybrids. The main goal of the experience is to identify genotypes that possess tolerance/resistance to biotic and abiotic stress factors, in the specific area of southern Romania and introduce the current range of energy that crop plants

RESEARCHING RESULTS ON THE FERTILIZER APPLYING ON SOWN PASTURES ON LUVISOIL FROM ARDS SIMNIC

The sown pastures that are made of valuable grasses and leguminous fodder species have a high productive potential which can only be capitalized byproper fertilization. The mineral fertilizers are applied on a large scale due to their easy absorbtion by plants because they are soluble and immediate effect. Thenitrogen fertilizers applied on several rates substantially contributes to theobtaining of high harvests of fodder of good quality ensuring a better rescheduling of production

RESEARCHES ON THE APPLYING TIME OF FERTILIZERS AND THEIR TYPE ON SOWN PASTURES FROM CENTRAL AREA OF OLTENIA

Proper use of fertilizers on pastures assumes the detailed knowing of technical aspects related with the type of the fertilizer, the combination, the rate, the splitting, the time of applying, all these things making the object of extensive researches. Regarding the chemical fertilization, on sown pastures there can be used, both, simple fertilizers (ammonium nitrate, nitrocalcar, superphosphate, potassium salt, etc.) and complex ones in different formulas

THE INFLUENCE OF TILLAGE ON SOIL WATER

The present paper presents the results of an experiment with different tillage referring to soil moisture in dynamics, the corn plants height and the grain yield. The variants have been: v1= plowed soil in autumn and drilled after seedbed preparation by harrowing, v2= plowed soil in autumn and drilled in the spring without seedbed preparation, v3= no till without mulch layer and v4= no till with mulch layer. The results show that the main role of tillage is to keep water into the soil for roots. No tillage condition determines the compaction of shallow soil layer of 3-5 cm which extracts the water from beneath and loses it by evaporation. Direct drilling requires the presence of the mulch layer which reduces evaporation

RESEARCHES ON ONION AND GARLIC WEED CONTROL

Onion and garlic crops are highly susceptible to weed infestation because theygrow slowly on the first stages and can be easily compromised by weeds. Our study was made at the Didactical research Station of Banu maracine which belongs to the University of Craiova, Romania. We have tried three herbicide active ingredients: metolachlor, pendimetalin and oxyfluorfen. The crops were: sown onion, planted onion and planted garlic. On postemergence we have tried four concentrations of oxyfluoerfen as Goal 2E herbicide. The reason why we tried these substances is that the information on the herbicide leaflet does not provide enough knowledge for postemergent application on sown onion and planted garlic. Our resilts have shown that the sown onion and garlic can not be sprayed by 5 ml in 5 litres water while planted onion resists to even 33 ml in 5 litres water