Partitioning of macronutrients and nutritional efficiency in fertigated prata banana

Abstract

Adequate nutritional management of any plant species requires quantifying the nutrients accumulated in the plant and knowing their allocation in the different organs. The objective of this study was to evaluate the partitioning, accumulation, export of macronutrients and the nutritional efficiency of fertigated Prata banana plants. A historical survey of annual fruit productivity was conducted in 66 plots of Prata banana, selecting four that met the annual productivity classes (< 30.0; 30.0 = 37.5; 37.5 = 45.0 and > 45.0 t ha-1). The dry matter weights of the different organs of parent plant and follower, as well as the respective contents of macronutrients, were used to estimate the accumulation, partitioning, export, sequence of accumulation of macronutrients and nutritional efficiency using the coefficient of biological utilization (CBU). The partitioning of macronutrient accumulation varied with productivity class and plant organ. The average distribution of nutrients in the parent plant and in the follower ranged from 67.5 to 82.8 % and from 17.2 to 32.5 %, respectively. Macronutrient exports per ton of bunch were 4.334, 1.660, 0.361, 0.224, 0.148 and 0.119 kg t-1 for K, N, P, Mg, S and Ca, respectively. Banana mats have a nutrient partitioning pattern for different yields, that is, this work provides evidence that there is an “ideal compartmentalization” that promotes higher productivity; however, more research is needed to support this statement. The most exported nutrients per ton of bunch were K and N. The descending order of accumulation was: K > N > Ca > Mg > P > S. It was observed that the CBUs of N and P were less sensitive to productivity variations, while those of Ca and Mg were the most sensitive.

Nutrient Diagnosis of Fertigated “Prata” and “Cavendish” Banana (Musa spp.) at Plot-Scale

“…Biplot analysis showed that Mn, Na and Al concentrations varied the most in leaf tissues (Figure 4). The variations in tissue compositions were attributable to well water for Na, fertilization with manganese sulfate for Mn, and soil genesis or rhizosphere effects for Al [72,73].…”

“…While the nutrient requirements of banana crops are generally assessed from yield potential, nutrient exportations through harvest, restitution of plant residues back to soil, nutrient leaching, soil erosion, plantation density, soil fertility, and root development [7,72,74], there are numerous controllable and uncontrollable growth factors and countless factor interactions impacting crop performance [75]. Features can be processed by ML models at a regional scale, where yield-impacting factors are averaged, or at a local scale, where site-specific factors are documented in a dataset.…”

Accumulation and distribution of micronutrients in banana cv. Williams (Musa AAA Simmonds) with different doses of nitrogen

“…However, high doses of N could promote excessive leaf growth and favor a greater accumulation of N in leaves, i.e. plants allocate more N in leaves than in fruit formation, resulting in low productivity (Deus et al, 2020). The increased accumulation of Mn and B in the cv.…”

Nutritional demand of 'Grande Naine' and 'Prata Comum' banana bunches in two growing seasons

“…Brazil is the world's fourth largest banana producer, with production of approximately 6.8 million tons; however, in the world productivity ranking, the country occupies the 61 st place, with 14.8 t ha -1 (FAO, 2021). The low banana productivity in the country is often a result of the nutritional management used in commercial orchards such as inadequate supply of nutrients for the crop (DEUS et al, 2018) due to underutilization of soil and plant tissue analysis (DEUS et al, 2020a).…”

“…Several studies have evaluated dry matter production and nutrient accumulation in banana organs, including bunches at just one time of the year, considering irrigated cultivation in the northeastern region of the country (SOARES et al, 2008;HOFFMANN et al, 2010a;HOFFMANN et al, 2010b;SOARES et al, 2011;DEUS et al, 2020a;DEUS et al, 2020b). However, this information can only be used in fertilization programs for places Oliveira et al (2022) Nutritional demand of 'Grande Naine' and 'Prata Comum' banana bunches in two growing seasons Rev Bras Frutic 2022; 44: n5: e-430 3 with water conditions similar to those found in these studies, thus limiting nutritional management in predominantly non-irrigated areas, a condition observed in one of the main bananas producing regions in Brazil, the Vale do Ribeira -SP.…”