Abstract. Large quantities of N fertilizers may be lost in rice fields by nitrification-denitrification. In this connection, experiments were carried out in order to compare the effects from slow-release N-fertilizers (ISODUR) and products integrated with diciandiamide (DCD), a nitrification inhibitor, with the N splitting method applied in two or three times on the rice growth and yield. The e...

Sleeve and large field cage experiments were conducted in Stoneville, MS, in 2010 and 2011 to assess adult rice stink bug, Oebalus pugnax (F.), injury in rice. 'Cocodrie' and 'Wells' were infested at bloom, milk, and soft dough stages of panicle development. Twenty rice panicles were infested individually in the sleeve cage experiment as replicates with 0, 1, or 2 O. pugnax in a split-plot, com...

Pathogenicity tests verifying the behavior of Septoria tritici isolates should be considered as a priority in the selection of resistant wheat materials to this pathogen, since the aggressiveness of each isolate can vary significantly, causing problems in the evaluation and selection of resistant genotypes. The objective of this work was to determine whether physiologic specialization exists am...

Seed quality includes three aspects, namely genetic quality, physical and physiological quality. Physiological is an aspect of seed as indicated by viability vigor. This study aims to analyze the effect different types sound exposure on early growth corn seeds, long maize seeds. The research was carried out in laboratory Faculty Agriculture, Teuku Umar University. September 20 - October 19, 201...

The present study was initiated to determine whether isolates from soil and roots of paddy plants can affect the plant’s growth productivity. conducted answer question, “Can rice be grown when NPK doze is reduced?” This aims apply methanotroph bacteria on production lowland rice. research field carried out in fields Amparita Village, TelluLimpoe District, Sidenreng Rappang Regency, South Sulawe...

Red rice (Oryza sativa L.) is a prevalent weed in rice production, competing with cultivated rice for nutrients and other resources. We hypothesize that red rice has a more efficient nitrogen (N) assimilation due to adaptive molecular mechanisms that are absent in rice. Our greenhouse experiments comparing the growth and physiological responses between red rice and ‘Wells’ rice, one of the comm...

Appropriate plant spacing and new superior rice varieties are essential factors in achieving high yields. This study aimed to evaluate jajar legowo planting systems that increase growth yield during the dry season East Nusa Tenggara. The research was arranged a split plot randomized complete block design with two replications. (main plot) consisted of upland (Inpago 8 Inpago 12) lowland (Inpari...

Nonlinear equations were compared with categorical analysis to account for DIM effects on milk production. Five different models for lactation curves were evaluated. Derived from a multiphasic lactation curve, the selected lactation curve appeared to result in random residuals and performed more consistently than the multiphasic curve. Residuals from the fitting of lactation curves were then us...

Abstract A field experiment was conducted to investigate the influence of agricultural machines (AM) LDSM and Nordsten planting depths (PD) on wheat/ Abu-Ghraib 3 cultivar. The included two types AM (LDSM Nordsten) three PD levels (PD1 6, PD2 8 PD3 11 cm) application. split -split plot arrangement in RCBD with replications used, results indicated that (Nordsten type) major impact than all studi...