22 documents found, page 1 of 3
Selection of sorghum for drought tolerance in a semiarid environment.
BATISTA, P. S. C.; CARVALHO, A. J.; PORTUGAL, A. F.; BASTOS, E. A.; CARDOSO, M. J.; TORRES, L. G.; JULIO, M. P. M.; MENEZES, C. B. deDrought stress is a serious obstacle for crop production, especially in arid and semi-arid areas of the world. Sorghum is a useful crop to grow in areas with erratic, poorly distributed or inadequate rainfall. To help determine the best alternatives, we evaluated 30 sorghum cultivars with and without water stress in the post-flowering plant stage. The work was carried out at the Experimental Station of Gorutuba...
Changes in temperature of a Plinthosol cultivated with sugarcane under straw le...
ANJOS, J. C. R. dos; ANDRADE JUNIOR, A. S. de; BASTOS, E. A.; SILVA, E. M. daSoil temperature is affected by its coverage and influences sugarcane productivity. Changes in temperature were assessed in a Plinthosol cultivated with sugarcane under different straw levels, as well as its reflection in stalk productivity, aiming at determining the maximum amount of straw to be removed for other purposes without damaging soil thermal conditions necessary for the crop.; Made available in DSpac...
Identification of drought-tolerant corn genotypes by multivariate analysis.
SOUSA, R. S. de; BASTOS, E. A.; CARDOSO, M. J.; PEREIRA, D. R.The identification of genotypes that are tolerant to water deficit is crucial for the maintenance of the agricultural production. This study aimed to evaluate the genotypic variation for drought tolerance among corn genotypes by means of multivariate analysis, as well as to identify hybrids with high grain yield under conditions of water deficit and full irrigation. For this purpose, an experiment was conducted...
Diallel analysis of tolerance to drought in cowpea genotypes.
RODRIGUES, E. V.; SILVA, K. J. D. e; ROCHA, M. de M.; BASTOS, E. A.; SANTOS, A. dosThe low use of technologies by farmers and the occurrence of biotic and abiotic stresses are limiting factors for cowpea production in the Brazilian Northeast region. The tolerance of genotypes to drought is an alternative to decrease the negative effects of stresses on cowpea production. Thus, the objective of this work was to identify parents and combinations of cowpea genotypes with high probability of gener...
Tolerance of F2 populations of cowpea to water deficit.
RODRIGUES, E. V.; SILVA, K. J. D. e; ROCHA, M. de M.; BASTOS, E. A.; SANTOS, A. dosWater deficit affects plant development and the overcoming of its effects depends on the genotype, duration of stress, severity of damage and development stage of the plant at water stress. Cowpea is considered tolerant to water deficit, however, studies have shown that its yield can be reduced under this condition. Thus, the objective of this work was to evaluate the effect of water deficit on F2 populations o...
Cowpea response to phosphorus and zinc.
MELO, F. de B.; BASTOS, E. A.; CARDOSO, M. J.; RIBEIRO, V. Q.Low grain yield of cowpea is influenced by several production factors, especially inadequate soil fertilization, in particular, phosphorus application. Tropical soils have low phosphorus and zinc levels due to either the source material or the absence of fertilization, which restricts cowpea grain yield; besides of that, zinc deficiency is accentuated with phosphor application. This study aimed to evaluate the ...
Effect of water regimes and plant densities on cowpea production.
MONTEIRO, M. M. de S.; BASTOS, E. A.; CARDOSO, M. J.; ANDRADE JUNIOR, A. S. de; RIBEIRO, V. Q.Cowpea has been cultivated in a rudimentary form in the main producing regions of Brazil, resulting in lower grain yields, when compared to the crop potential. The use of technologies such as water regimes, adequate plant density and soil management are alternatives to increase this crop yield. This study aimed at evaluating the effects of different water regimes and plant densities on the yield components of c...
Soybean development under soil water deficit.
SIMEÃO, M.; ANDRADE JUNIOR, A. S. de; SILVA, E. M. da; RIBEIRO, A. de A.; BASTOS, E. A.One of the main factors affecting soybean development is water deficiency, especially when it occurs during the flowering and pods filling stages. Thus, this study aimed to evaluate the soybean development under soil water deficit in different phenological phases, under soil and climatic conditions of Bom Jesus, Piaui State, Brazil. The test was conducted at São Luiz Farm, located 3 km from Bom Jesus to PI, dur...
Stalk yield of sugarcane cultivars under different water regimes by subsurface ...
ANDRADE JUNIOR, A. S. de; BASTOS, E. A.; RIBEIRO, V. Q.; ATHAYDE SOBRINHO, C.; SILVA, P. H. S. daThis study aimed to evaluate the stalk yield of ten sugarcane cultivars (RB962962, RB931011, RB931530, RB98710, RB92579, RB867515, RB863129, SP791011, RB72545 and VAT90212) subjected to water deficit, full irrigation and water surplus by subsurface drip irrigation, during three cropping seasons (2011-2014). The experiment was conducted at the Experimental Field of Embrapa Meio-Norte, Teresina, Piauí State, Braz...
Performance of grain sorghum hybrids under drought stress using GGE biplot anal...
BATISTA, P. S. C.; MENEZES, C. B.; CARVALHO, A. J.; PORTUGAL, A. F.; BASTOS, E. A.; CARDOSO, M. J.; SANTOS, C. V.; JULIO, M. P. M.The objective of this study was to estimate the adaptability and stability of grain sorghum hybrids grown under post-flowering water stress and non-stress conditions. The trials were carried out in Nova Porteirinha-MG during the season of 2014 and 2015, and in Teresina-PI in the 2014 season. Twenty-nine-grain sorghum hybrids were evaluated, in a randomized complete block design, with three replications. Plots c...