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- Title
DETERMINAÇÃO DA ÁREA DE CLADÓDIOS E FATOR DE CORREÇÃO DA PALMA FORRAGEIRA SOB FERTIRRIGAÇÃO NITROGENADA.
- Authors
Suassuna de Lima, Antônio; Ferreira da Silva, Patrícia; Moreira de Matos, Rigoberto; Ibrahim Bonou, Semako; Dantas Neto, José
- Abstract
The measurement of the cladode area is an important factor required in agronomic studies to evaluate the growth and production of green mass of forage palm. The objective of this study was to determine the cladode area and the correction factor of three forage palm cultivars, by different methods, under nitrogen fertirrigation. The experiment was conducted under field conditions at the Poço Redondo farm, in the municipality of Santa Luzia, Paraíba. A randomized complete block design and 2x2x3 factorial scheme, two irrigation slides (100 and 25% ET0), two levels of nitrogen fertilization (0 and 600 kg ha-1 of N) and three cultivars forage palm Orelha de Elefante Mexicana, IPA-Sertânia and Miúda), with five replicates. The methods of the area of the green mass, area by the weight of the paper and area in squares were used. The area method by paper weight and grid area was the ones that best fit the determination of the cladode area. It is suggested the use of the mean correction factor F = 0.70 for the Orelha de Elefante Mexicana and 0.75 for IPA-Sertânia and Miúda. The linear length and width measurements of cladodes are efficient in determining the forage palm cladode area using first order linear equations. The 100% ET0 irrigation depth associated with the nitrogen dose of 600 kg ha-1 provided the largest areas of cladodes of the forage palm.
- Subjects
PARAIBA (Brazil : State); AREA measurement; LINEAR orderings; CORRECTION factors; LINEAR equations; LENGTH measurement; FORAGE plants
- Publication
Revista Brasileira de Agricultura Irrigada - RBAI, 2020, Vol 14, Issue 1, p3803
- ISSN
1982-7679
- Publication type
Article
- DOI
10.7127/rbai.v14n1001017