Growth of Cocoa as Function of Fertigation with Nitrogen
سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 719
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شناسه ملی سند علمی:
JR_IJEE-3-4_014
تاریخ نمایه سازی: 1 اردیبهشت 1393
چکیده مقاله:
The effect of irrigation and nitrogen fertilization on the growth characteristics of cocoa (Theobroma cacao L.), specifically the clone CCN-51, was evaluate in a field experiment conducted on the period fromAugust 2010 to June 2011 in Jequié city, Bahia State, Brazil. The experimental area, approximately 0.18 ha withthe planting of cocoa clonal CCN- 51 in Yellow Oxisol was irrigated drip emitters. The statistical experimental design was randomized blocks with four replications where the factors water level and nitrogen level were factorial combined resulting in the 16 treatments. During the experimental period were measured plant height and stem diameter during six periods. The analysis of variance showed a significant effect of water and N levels in plant height and stem diameter. The biometric variables responded to treatments. The water level used in this study negatively affected the plant growth. The nitrogen level used in this study positively influenced the plant growth. The relative growth rate in relation to the plant height and stem diameter, on average, corresponded to about 14% and 15%, respectively
کلیدواژه ها:
Drip irrigation/ Fertigation /Theobroma cacao L
نویسندگان
Roger Luiz Da Silva Almeida
Department of Agricultural Engineering, Federal University of Campina Grande,Av. Aprigio Veloso, ۸۸۲, Campina Grande, Paraiba State, Brazil
Lucia Helena Garófalo Chaves
Department of Agricultural Engineering, Federal University of Campina Grande,Av. Aprigio Veloso, ۸۸۲, Campina Grande, Paraiba State, Brazil
Enio Fraga Da Silva
Embrapa - Empresa Brasileira De Pesquisa Agropecuária - Embrapa Solos,Rio De Janeiro, Rio De Janeiro State, Brazil