التفاصيل البيبلوغرافية
| العنوان: |
Growth of leaf D and productivity of 'Imperial' pineapple as a function of nitrogen and potassium fertilization. |
| Alternate Title: |
Crescimento da folha D e produtividade do abacaxizeiro 'Imperial' em função da adubação nitrogenada e potássica. (Portuguese) |
| المؤلفون: |
Rios, Élica Santos Carvalho, Mendonça, Rejane Maria Nunes, Fernandes, Leandro Firmino, de Figueredo, Lucimara Ferreira, de Almeida Cardoso, Edson, de Souza, Adailson Pereira |
| المصدر: |
Brazilian Journal of Agricultural Sciences / Revista Brasileira de Ciências Agrárias; 2018, Vol. 13 Issue 2, p1-9, 9p |
| مصطلحات موضوعية: |
PINEAPPLE, EFFECT of nitrogen fertilizers on plants, EFFECT of potassium fertilizers on plants, PLANT growth, PLANT productivity |
| Abstract (English): |
The cv. Imperial has great commercial potential. Its expansion depends, to a large extent, on the adjustment to the fertilization recommendations proposed in the fertilization and liming recommendation bulletins of the main producing states, in order to have adequate nutritional management. The objective of this study was to verify the growth of leaf D and the productivity of 'Imperial' pineapple cultivated under the presence and levels of fertilization of N and K. The experimental design was a randomized complete block with three replicates and treatments were arranged in a factorial scheme according to the Plan Plueba III matrix, with five doses of N (15; 90; 150; 210 and 285 kg ha-1) and five doses of K (21.6, 129.6, 216.0, 302.4 and 410.4 kg ha-1). Data were submitted to analysis of variance. To evaluate the effect of the interaction of N and K doses and days after planting, the response surface technique was used. The elevation of N doses to 285 kg ha-1 provided an increase in the median width of leaf D and SPAD index. The dose of 410.4 kg ha-1 of K2O favored the length, basal width, fresh and dry mass of leaf D. There was a correlation of Pearson of fresh leaf D mass (0.63) and leaf D length (0.97), in relation to productivity. The application of 285 kg ha-1 of N and 410.4 kg ha-1 K2O favors the growth of leaf D, as well as the higher dose of K2O (410.4 kg ha-1) allows productivity of 26.36 t ha-1 of 'Imperial' pineapple. [ABSTRACT FROM AUTHOR] |
| Abstract (Portuguese): |
A cv. Imperial possui grande potencial comercial. A sua expansão depende, em grande parte, do ajuste às recomendações de adubação propostas nos boletins de recomendação de adubação e calagem dos principais estados produtores, para se ter o adequado manejo nutricional. Com isso, objetivou-se verificar o crescimento da folha De a produtividade do abacaxizeiro 'Imperial' cultivado sob presença e níveis de adubação de N e K. O delineamento experimental foi o casualizado em blocos, com três repetições e os tratamentos foram dispostos em esquema fatorial conforme a matriz PlanPlueba III, com cinco doses de N (15; 90; 150; 210 e 285 kg ha-1) e cinco doses de K (21,6; 129,6; 216,0; 302,4 e 410,4 kg ha-1). Os dados foram submetidos à análise de variância. Para avaliar o efeito da interação das doses de N e K e dias após o plantio, foi utilizada a técnica de superfície de resposta. A elevação das doses de N para 285 kg ha-1 proporcionou aumento na largura mediana da folha D e índice SPAD. A dose de 410,4 kg ha-1 de K2O favoreceu o comprimento, a largura basal, massa fresca e seca da folha D. Houve correlação de Pearson da massa fresca da folha D (0,63) e do comprimento da folha D (0,97), em relação à produtividade. A aplicação de 285 kg ha-1 de N e 410,4 kg ha-1 K2O favorecem o crescimento da folha D, assim como a maior dose de K2O (410,4 kg ha-1) permite produtividade de 26,36 t ha-1 de abacaxizeiro 'Imperial'. [ABSTRACT FROM AUTHOR] |
|
Copyright of Brazilian Journal of Agricultural Sciences / Revista Brasileira de Ciências Agrárias is the property of Universidade Federal Rural de Pernambuco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
Full Text Finder