Strategic fertilization in Cenchrus purpureus varieties tolerant to drought in the western region of Cuba

R. Herrera

Abstract


The influence of strategic fertilization with nitrogen (150 kgN/ha) applied in the rainy season in Cenchrus purpureus varieties tolerant to drought (CT-600, CT-601, CT-602, CT-603, CT-604, CT-605, CT-608 y CT-609) compared with CT-115 as control was studied. A random block design with five replications was used. In the dry season only CT-604 had the highest (P<0.001) dry matter percentage of leaf, stem and the hole plant. The highest (P<0.001) leaves content was showed by CT-605 (60.07 and 60.17 % in the rainy and dry season, respectively). The varieties CT-605, CT-608 and CT-609 (5.0, 5.6 and 5.2 tDM/ha, respectively) exceeded (P<0.001) the yield of CT-115 (3.4 tDM/ha) in the dry season. The leaf area varied (P<0.001) between varieties, while CT-604 showed the lower population (P<0.001) in both climatic seasons (7.2 and 4.6 tillers/5min the dry and rainy season, respectively). The varieties CT-605, CT-608 and CT-609 increased their yield in the dry season with adequate leaves contents and adequate population. It is suggest expanding this information with the chemical composition and extending these varieties in the western region, always you had the nitrogenous fertilizer.
Key words: Cenchrus, yields, leaves, population

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