%0 Journal Article
%T Biomass and Harvest Index of Two Quality Protein Corn Varieties with Bio-Fertilization in Two Luvisols of Yucatan, Mexico
%A Jorge H. Ram¨ªrez-Silva
%A M¨®nica Guadalupe Lozano-Contreras
%A Genovevo Ram¨ªrez-Jaramillo
%J Open Access Library Journal
%V 9
%N 6
%P 1-13
%@ 2333-9721
%D 2022
%I Open Access Library
%R 10.4236/oalib.1108755
%X This work aimed to evaluate the above-ground Total Dry Biomass (<b>TDB</b>) and the Harvest Index (<b>HI</b>) of two quality protein maize varieties. Biofertilizers (<i><b>Bio</b></i>) in combination with chemical fertilizers (<i><b>Chem</b></i>) were applied in two <i>Luvisols</i> with low (Lot 1) and high (Lot 2) intensive agricultural use. Eight treatments resulted from combining the two varieties: <i>Chichen Itza</i> (<i><b>Chich</b></i>) and <i>Sac Beh</i> (<i><b>Sac</b></i>) with 1) a chemical fertilizers dose (60-80-00): (<b>N-P<sub>2</sub>O<sub>5</sub>-K<sub>2</sub>O</b>) alone; 2) supplemented with biofertilizers (60-80-00   Mycorrhizae   <i>Azospirillum</i>); 3) a half nitrogen dose plus biofertilizers (30-80-00   Mycorrhizae   <b>Azospirillum</b>) and 4) the control (00-00-00). At physiological maturity, the <b>TDB</b> (grain, leaves, stalks and husk) in t&middot;ha<sup>-1</sup> was used to calculate the Harvest Index (<b>HI</b>). The relationship between partial biomass (<b>PB</b>) on <b>GY</b> was assessed. No statistical differences were found. Regardless of treatments, the general average of <b>TDB</b>, <b>PB</b> and <b>GY</b>, of both varieties was higher in Lot 1. <b><i>Sac</b></i> produces more <b>PB</b> than <i><b>Chich</b></i> in all treatments including the <i><b>Control</b></i>. The maximum <b>GY</b>¡¯s, in Lot 1 for both <i><b>Chich</b></i> (5.88 t&middot;ha<sup>-1</sup>) and Sac (5.83 t&middot;ha<sup>-1</sup>) were practically the same. T5 (<b><i>Chem 1-Bio-Chich</b></i>) and T6 (<b><i>Chem 1-Bio-Sac</b></i>) were the best treatments. However, <b><i>Sac</b></i> obtained the maximum <b>HI</b> (0.49) whilst <b><i>Chich</b></i> had 0.43. No effect on <b>HI</b> was found when applying <b><i>Bio</b></i> to <b><i>Chich</b></i> as <b><i>Sac</b></i> showed. The lowest <b>HI</b> of both varieties was found in the <b><i>Control</b></i> and those treatments with half nitrogen. In Lot 2, <b><i>Sac</b></i> continues with the highest <b>PB</b> (6.6 t&middot;ha<sup>-1</sup>) with practically the same <b>GY</b> (4.63 t&middot;ha<sup>-1</sup>) as <b><i>Chich</b></i> (4.84 t&middot;ha<sup>-1</sup>). However, <b><i>Chich</b></i>, and no <b><i>Sac</b></i>, showed the best <b>HI</b> (0.46) performance with T5 (<b><i>Chem 1-Bio-Chich</b></i>). It seems that the <b>GY</b> of <b><i>Sac</b></i> can be more predictable if <b>PB</b> is used as an indicator according to high Determination Coefficients (<b>R<sup>2</sup></b>) in both lots.
%K Intensive Use
%K Sac Beh
%K Chichen Itza
%K Mycorrhizae
%K Azospirillum
%U http://www.oalib.com/paper/6773658