Effect of fertilization with N on height, number of leaves, and leaf area in banana (Musa AAA Simmonds, cv. Williams)

Abstract

The production of bananas (Musa AAA Simmonds, cv. Williams) for export in the Uraba area of Colombia represents economic and social benefits for the country, demanding improvements in agronomic practices, especially fertilization. The objective of this research was to evaluate plant height, leaf area and number of leaves in banana cv. Williams in two production cycles to adjust fertilizer recommendations according to the needs of the plants in the development phase. A sixth-generation crop was used, which was evaluated during five stages of development and two consecutive production cycles in 2011 and 2012. The multivariate approach was used for the analysis of variance of the repeated measures design, with two factors between subjects (fertilization and repetitions) and one intra-subject factor associated with the production cycle. The linear models were adjusted according to the phenological stage determined as when the vegetative structures were present, simultaneously evaluating responses in plant height, number of leaves, and leaf area. The effect of N doses on the developmental stages of the banana for production cycle and between cycles indicated that the doses of 321.8 and 483 kg ha-1 had the best yield. The dose of 483 kg ha-1 was the best one since it resulted in the highest plant growth.

PERTUMBUHAN DAN HASIL TOMAT (Lycopersicum esculentum Mill.) YANG DIBERI PUPUK KANDANG KAMBING DAN BOKASI LIMBAH PASAR DI TANAH ULTISOL

“…Pemberian 300 g per polibeg pupuk Pupuk kandang kambing mempunyai keunggulan-keunggulan karena dapat memperbaiki agregasi tanah, meningkatkan kapasitas tanah menahan air, memperbaiki aerasi, meningkatkann kandungan hara N, P, K dan hara-hara lainnya di dalam tanah serta mengandung karbon yang menjadi sumber energi bagi mikroba tanah. Seperti yang dilaporkan oleh beberapa peneliti bahwa pemupukan N dapat meningkatkan jumlah, diameter batang dan luas daun (El Noeman et al, 1990;Gasim, 2001;Torres-Bazurto et al, 2019). Di amati pula bahwa peningkatan takaran pupuk kandang kambing dan bokasi limbah pasar tidak meningkatkan jumlah daun secara nyata.…”

Symptom expression and resistance of some banana cultivars to banana bunchy top virus infection

“…A possible reason for these symptoms on Uter banana leaves was a deficiency of complex nutrients, such as nitrogen, phosphorus, potassium, boron, sulfur and iron. A lack of nitrogen causes all parts of the leaves to turn pale green, the leaf midrib becomes reddish and growth slows down (Tejada and Gara, 2017;Torres-Bazurto et al, 2019). Since phosphorus is compulsory for plant growth, its lack causes stunted plants and makes old leaves chlorotic and saw-toothed and the leaf edges curl (Malhotra et al, 2018).…”

The Influence of Soil Nutrients Availability on Banana Bunchy Top Disease Incidence in Banyumas Regency, Central Java Province, Indonesia

“…Similar to Sun et al (2020b), reducing N application rates increased the yield of maize and wheat. Fertilizer is an important issue in banana production as well (Torres-Bazurto et al, 2019). Nitrogen fertilizer affects plant physiology, such as chlorophyll content, enzyme activities and soluble protein (Sun et al, 2020a).…”

“…Nitrogen fertilizer affects plant physiology, such as chlorophyll content, enzyme activities and soluble protein (Sun et al, 2020a). The consequence of the N disorders in the plants is reflected in shorter plants, smaller leaf areas, generalized leaf chlorosis and low yields (Torres-Bazurto et al, 2019). Soil nutrient supplies may change pathogen dynamics indirectly at several stages of the infection cycle by changing host functional traits.…”