scholarly journals Effect of Phosphorus Levels on Soil Properties and Plant Tissues of Two Nerica Varieties

2018 ◽  
pp. 1-9
Author(s):  
Etabo E. Mathew ◽  
Wekha N. Wafula ◽  
Nicholas K. Korir ◽  
J. P. Gweyi-Onyango
Keyword(s):  
Soil Properties ◽  
Plant Tissue ◽  
Block Design ◽  
Rice Variety ◽  
Application Rate ◽  
Control Treatment ◽  
Rice Varieties ◽  
Tissue Nitrogen ◽  
Phosphorus Levels ◽  
Tissue Phosphorus

Phosphorus levels in the soil are easily fixed and rendered unavailable to plants even if they are found to be high and therefore, its influence on uptake of other nutrients such as nitrogen, and potassium cannot be overemphasized. In that view, an experiment was set out at KALRO-Mwea to investigate on the effect of phosphorus levels on soil properties and plant tissue nutrient contents of Nerica rice variety. The experiment was laid out in a Randomized Complete Block Design in split-split plot arrangement and replicated thrice. Two rice varieties (Nerica 11 and Nerica 4) formed the main plots and 4 phosphorus levels (0 kg P/ha, 25 kg P/ha, 50 kg P/ha and 75 kg P/ha) formed the sub plots. Highest net pH decreases of 0.20 and 0.22 units were recorded at 75 Kg haˉ¹ P2O5 in season 1 and season 2 respectively, while the lowest net decreases of 0.12 and 0.16 were elicited at 50 Kg haˉ¹ P2O5 treatment in season 1 and season 2 respectively. A net decrease was observed in all the CEC levels where phosphorus was applied in all the seasons in which the highest net decrease of 1.09 and 1.03 during season 1 and 2 respectively was elicited on the control treatment, while the lowest net decrease of 0.61 and 0.59 was elicited by the 50 Kg haˉ¹ P2O5 rate in season 1 and 2 respectively. There was an inverse relationship exhibited between the phosphorus level of applications and the soil phosphorus net decrease across the two seasons. The net decrease was highest at 0 Kg haˉ¹ P2O5 and increased significantly with increasing phosphorus rate. That content of soil nitrogen were low with a marginal increase recorded with application of phosphorus across the seasons. The highest net increase of 0.05% was observed at the 75 Kg haˉ¹ P2O5 rate and control in season 1 while the application rate of 50 Kg haˉ¹ P2O5 had the lowest net increase of 0.02% in season 2. Highest mean plant-tissue phosphorus of 62.05 ppm was recorded in Nerica 4 under 75 kg P/ha treatment. Highest plant tissue nitrogen of 0.686% and 0.713% for Nerica 4 and 11 respectively were elicited at 75 kg haˉ¹ P2O5  in season 1, whereas in season 2 the highest plant tissue nitrogen of 0.721% and 0.691% at 75 kg haˉ¹ P2O5  for Nerica 11 and 4 respectively was recorded. Application of phosphorous led to the highest plant-tissue phosphorus in both seasons indicating the importance of proper P fertilizer application where from this study 50-75 kg haˉ¹ P2O5 rate is recommended in rice growing.

scholarly journals Effect of urea super granules, prilled urea and poultry manure on the yield of transplant Aman rice varieties

1970 ◽  
Vol 7 (2) ◽  
pp. 259-263 ◽  
Author(s):  
MH Kabir ◽  
MAR Sarkar ◽  
AKMSH Chowdhury
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Rice Variety ◽  
Poultry Manure ◽  
Control Treatment ◽  
Rice Varieties ◽  
Inorganic Fertilizers ◽  
Yield Attributes ◽  
Full Dose ◽  
Prilled Urea

An experiment was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh in transplant Aman season 2008 to find out the effect of urea super granules (USG), prilled urea (PU) and poultry manure (PM) on the yield and yield attributes of transplant Aman rice varieties. Two transplant Aman rice varieties viz. BRRI dhan41 and BRRI dhan46 and ten levels of integrated nutrient management encompassing USG, PU and PM were tested following randomized complete block design with three replications. It was observed that variety BRRI dhan41 gave higher grain yield than BRRI dhan46. For fertilizer effect, the highest grain yield (5.17 t ha-1) was obtained from full dose of USG (1.8g) and other inorganic fertilizers, which was similar to that obtained from full dose of USG (1.8g) + PM at 2.5 t ha-1 followed by full dose of PU + PM at 2.5 t ha-1. The lowest grain yield was obtained in the control treatment. In case of interactions, the highest grain yield was obtained in BRRI dhan41×1.8g USG and other inorganic fertilizers which was similar to that of the same dose of USG with PM at 2.5 t ha-1 and the lowest yield was obtained in the control treatment. It was assessed that a considerable portion (31.25%) of PU nitrogen could be saved by using USG (1.8g) together with other inorganic fertilizers or with PM at 2.5 t ha-1. Keywords: Urea super granules; Prilled urea; Poultry manure; Yield; Transplant Aman rice variety DOI: 10.3329/jbau.v7i2.4732 J. Bangladesh Agril. Univ. 7(2): 259-263, 2009

scholarly journals Genotype selection and addition of fertilizer increases grain yield in upland rice in Suriname

2017 ◽  
Vol 47 (3) ◽  
pp. 185-194 ◽  
Author(s):  
Adriano Stephan NASCENTE ◽  
Ruby KROMOCARDI
Keyword(s):  
Grain Yield ◽  
Management Practices ◽  
Upland Rice ◽  
Block Design ◽  
Field Trials ◽  
Application Rate ◽  
Rice Grain ◽  
Rice Varieties ◽  
Local Conditions ◽  
Randomized Block Design

ABSTRACT The upland rice farmers in Suriname use local varieties and low level technologies in the field. As a result, the upland rice grain yield is low, at about 1 000 kg ha-1. Our objective was to evaluate the use of upland rice cultivars from Suriname and Brazil, and the effect of nitrogen, N, phosphorus, P, and potassium, K, fertilizers on cultivation variables. We undertook four field trials in the Victoria Area, in the Brokopondo District, using a randomized block design each with four replications. The most productive rice varieties were BRS Esmeralda (grain yield 2 903 kg ha-1) and BRS Sertaneja (2 802 kg ha-1). The highest grain yield of 2 620 kg ha-1 was achieved with a top dressing application of 76.41 kg N ha-1 20 days after sowing. For P, the highest grain yield of 3 085 kg ha-1 was achieved with application of 98.06 kg ha-1 P2O5 applied at sowing. An application rate of 31.45 kg ha-1 of K2O at sowing achieved the highest grain yield of 2 952 kg ha-1. Together, these application rates of N, P and K resulted in rice grain yield of about 3 000 kg ha-1, which is three times greater than the national average for upland rice. We demonstrate that the use of improved rice varieties matched to the local conditions, and application of appropriate fertilizers, are management practices that can result in significant increases in rice grain yield in Suriname.

scholarly journals Evaluation of Short Duration Drought Tolerant Rice Varieties in Drought Prone Areas of Subarnapur District of Odisha

2020 ◽  
pp. 21-26
Author(s):  
S. Pradhan ◽  
F. H. Rahman ◽  
S. Sethy ◽  
G. Pradhan ◽  
J. Sen
Keyword(s):  
Short Duration ◽  
Upland Rice ◽  
Plant Protection ◽  
Block Design ◽  
Rice Variety ◽  
Rice Varieties ◽  
Agronomic Practices ◽  
Drought Tolerant ◽  
Randomized Block Design ◽  
Sowing Seed

A study was conducted in farmer’s field through technology demonstrations during Kharif season of 2018 and 2019 in Subarnapur district of Odisha to recommend the most suited short duration drought tolerant upland rice variety particular to the locality. Six different varieties like Sahabhagi dhan, Mandakini, Jogesh, DRR-44, and DRR-42 & Khandagiri were taken with four replications in Randomized Block Design in both years. Technology demonstration included not only the improved short duration varieties, but also a package of good agronomic practices viz. line sowing, seed treatment with Bavistin, proper fertilization with dose @ 80:40:40 NPK/ha, pre emergence herbicide application with pretilachlor, needful manual weeding and  need based plant protection chemicals. The results of demonstration showed that farmers could increase rice productivity notably by adopting improved variety Sahabhagi dhan and DRR-44. These varieties recorded higher grain yields of 64% and 46%, respectively, and fetched a sum return of Rs 25620 and Rs 25275 over farmers’ local variety Khandagiri.

scholarly journals Effect of Fertilizers on Nutrient Content and Uptake of Aromatic Local Transplant Aman Rice Varieties in Acid Soil

2020 ◽  
pp. 35-48
Author(s):  
Kamrun Nahar Mousomi ◽  
Mohammad Noor Hossain Miah ◽  
Md. Abul Kashem ◽  
Imtiaz Miah
Keyword(s):  
Nutrient Uptake ◽  
Acid Soil ◽  
Block Design ◽  
Soil Nutrient ◽  
Nutrient Status ◽  
Nutrient Content ◽  
Control Treatment ◽  
Aromatic Rice ◽  
Rice Varieties ◽  
Nutrient Analyses

A pot experiment was conducted at the experimental net house of the Department of Soil Science, Sylhet Agricultural University, Sylhet, Bangladesh to observe the effect of fertilizers on yield and nutrient uptake of local aromatic rice varieties during the Aman season of 2015. The experiment was laid out in a Randomized Complete Block Design with three replications. Five local aromatic rice varieties (Kalizira: V1, Muktasail: V2, Nagrasail: V3, Maloti: V4 and Chinigura: V5) and four packages of fertilizers (F1:  Recommended package i.e. 45-10-20-10-0.5 kg ha-1 of N-P-K-S-Zn, F2: 2/3rd of recommended package, F3: 1/3rd of recommended package, and F4: Control) were used. Urea, TSP, MoP, gypsum and ZnSO4 were used as N, P, K, S and Zn source, respectively. According to the treatment, all fertilizers were applied as basal during final pot preparation while urea was applied in two equal splits (one half as basal and another half at 40 DAT). Nutrient content and uptake of the aromatic rice varieties were significantly affected by the application of different fertilizer packages (with few exceptions). Mostly Kalizira (1.10-0.44-2.31-0.67-13.75 g pot-1 of N-P-K-S-Zn) and/or Nagrasail (1.15-0.46-2.70-0.62-11.74 g pot-1 of N-P-K-S-Zn) varieties showed the highest nutrient uptake in grain and straw with recommended package of fertilizers. While in maximum cases Chinigura (0.41-0.16-0.76-0.197-3.17 g pot-1 of N-P-K-S-Zn) was observed to have the lowest with control treatment. In case of post harvest soil nutrient analyses, Kalizira and/or Chinigura variety associated with recommended package of fertilizers showed the highest nutrient status.

scholarly journals Growth, Yield and Nutrient Uptake Capacity of Rice under Different Sulphur Levels

2016 ◽  
Vol 4 (7) ◽  
pp. 557 ◽  
Author(s):  
A. K. M. Sajjadul Islam ◽  
Md. Shohel Rana ◽  
Dr. Md. Mazibur Rahman ◽  
Md. Jainul Abedin Mian ◽  
Md. Mezanur Rahman ◽  
...  
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Rice Variety ◽  
Nutrient Use Efficiency ◽  
Growth Yield ◽  
Growth And Yield ◽  
Control Treatment ◽  
Yield Attributes ◽  
Nutrient Use ◽  
S Deficiency

Because of using sulphur free fertilizer, rice crop facing tremendous sulphur (S) deficiency throughout the world as well as in Bangladesh. However, farmers of Bangladesh often overlook the importance of sulphur fertilization on rice yield. Therefore, the present study was conducted to investigate the influence of different levels of sulphur on growth, yield attributes and uptake of N, P, K and S by grain and straw of BRRI dhan41 rice variety. The experiment was laid out in randomized complete block design with three replication and eight treatments including control. The result of the study revealed that the highest plant height, panicle length, filled grain was found in T1 (50% RFD of S) treatment, while the utmost number of effective tiller and straw yield was recorded in T5 (150% RFD of S) treatment. Interestingly, maximum grain yield as well as uptake of N, P, K and S by grain and straw was significantly higher in T6 (175% RFD of S) treatment. The highest grain yield of T6 treatment might be due to maximum nutrient use efficiency. However, in all cases control treatment (T0) gave the worst result. The present study clearly indicates that higher rates (175% of the recommended dose) of S along with other fertilizers may be recommended for better growth and yield of BRRI dhan41 in Bangladesh soil.

scholarly journals Evaluation of Transplant Fertility of Short-day Onions in Southeast Georgia

HortScience ◽  
2002 ◽  
Vol 37 (4) ◽  
pp. 651-655
Author(s):  
George E. Boyhan ◽  
Reid L. Torrance ◽  
David E. Curry ◽  
Pamela M. Lewis ◽  
Donna O. Linton ◽  
...  
Keyword(s):  
Plant Height ◽  
Linear Increase ◽  
Residual Phosphorus ◽  
High Phosphorus ◽  
Phosphorus Fertilizers ◽  
Linear Effects ◽  
Plant Stand ◽  
Tissue Nitrogen ◽  
Phosphorus Levels ◽  
Tissue Phosphorus

Preplant levels of 5N-4.4P-12.4K (-5S or -9S) and sidedress applications of CaNO3 were evaluated in onion (Allium cepa L.). In addition, high phosphorus fertilizers 18N-20.1P-0K (diammonium phosphate) and liquid 10N-14.8P-0K were evaluated on sites with and without high residual phosphorus levels as well as their interaction with onion cultivars. Sidedress applications of CaNO3 had a significant effect on plant height and an interaction with preplant 5N-4.4P-12.4K fertilizer. There was a linear increase in plant height with increasing applications of 5N-4.4P-12.4K from 0 to 1569 kg·ha-1 with the CaNO3 applications. Neither 5N-4.4P-12.4K nor CaNO3 applications affected stand count. 5N-4.4P-12.4K fertilizer had significant linear effects on tissue potassium and sulfur. Tissue nitrogen and calcium increased with CaNO3 applications while phosphorus, potassium, and sulfur decreased. CaNO3 also had a positive effect on suitability for transplanting. There was an interaction effect between 5N-4.4P-12.4K and CaNO3 for tissue phosphorus levels. There was a linear decrease in tissue phosphorus levels with increasing amounts of 5N-4.4P-12.4K fertilizer with the sidedress CaNO3 treatments. High phosphorus fertilizers applied directly after seeding had no effect on plant stand or plant height either on soils with or without high residual phosphorus in 1998. In 1999, 10N-14.8P-0K fertilizer had a significant effect on plant height while 18N-20.1P-0K did not. Based on this study, we conclude that additional applications of high phosphorus fertilizers applied post seeding are not required due to the relatively warm conditions found in southeast Georgia in September. There were differences between cultivars, but cultivar× high phosphorus fertilizer interactions were nonsignificant.

scholarly journals A Rice Variety (BRRI dhan29) Yield Performance as Influenced by Foliar Application of Salicylic Acid in Bangladesh

2020 ◽  
Vol 2 (1) ◽  
pp. p263
Author(s):  
Shahnaz Parveen ◽  
Mohammad Issak ◽  
Md. Sohanur Rahman ◽  
Fakhar Uddin Talukder ◽  
Shanta Islam
Keyword(s):  
Salicylic Acid ◽  
Grain Yield ◽  
Biomass Production ◽  
Foliar Application ◽  
Block Design ◽  
Rice Variety ◽  
Foliar Spray ◽  
Growth And Yield ◽  
Control Treatment ◽  
Yield Performance

Objective of this study was to examine and evaluate the role of different rates of salicylic acid (SA) as foliar spray on growth and yield performance of BRRI dhan29. The experiment was conducted at Sher-e-Bangla Agricultural University, Bangladesh from November, 2016 to May, 2017 following a randomized complete block design with five rates of SA in six replications. The results showed that the lower rate of SA (upto 0.75 mM) has a positive effect on rice biomass production including effective tiller per hill, filled grain per panicle, grain yield and straw yield. The highest dry matter production at both maximum tillering and panicle initiation stages was found at SA spray rate of 0.5 mM. The highest number of effective tillers per hill (14.7) as well as the highest filled grain (120.4) and grain yield (8.1 t/ha) were found at SA rate of 0.75 mM. However, the maximum biomass production was obtained at SA rate of 0.25 mM. The minimum grain yield (7.0 t/ha) was observed in the control treatment.

Evaluation of the tolerance of Thai indigenous upland rice germplasm to early drought stress using multiple selection criteria

2015 ◽  
Vol 15 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Kittichai Narenoot ◽  
Tidarat Monkham ◽  
Sompong Chankaew ◽  
Patcharin Songsri ◽  
Wattana Pattanagul ◽  
...  
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Selection Criteria ◽  
Upland Rice ◽  
Block Design ◽  
Rice Variety ◽  
Tolerance Index ◽  
Rice Varieties ◽  
Rice Germplasm ◽  
Drought Tolerance Index

Drought remains the most important factor that affects rice productivity, especially in rainfed areas, worldwide. Upland rice is one of the crop choices of farmers in the rainfed environment. Although upland rice varieties require less water than lowland rice varieties, yields often remain limited by drought, particularly in the period of early growth. The aims of this study were to identify the traits related to early drought tolerance in upland rice varieties, and to identify the potential sources of germplasm for early drought tolerance. A total of sixty upland rice varieties were planted in a factorial experiment with a randomized complete block design with 3 replications in the rainy seasons of 2011 and 2012, under greenhouse conditions. Based on the drought tolerance index (DTI), the test germplasm sources were classified into three groups: (i) susceptible; (ii) moderately tolerant; (iii) tolerant to drought stress. Grain yield (GY) showed significant negative correlations with the leaf rolling score (r= − 0.623, P< 0.01), the leaf death score (LDS) (r= − 0.673, P< 0.01) and the recovery score (r= − 0.746, P< 0.01), while leaf dry matter (r= 0.698, P< 0.01) and leaf water potential (r= 0.618, P< 0.01) had significant positive correlations with GY. These findings indicate the suitability of the DTI as the selection criteria for early drought tolerance in a breeding programme. In addition, the upland rice germplasm accessions KKU-ULR011, KKU-ULR012, KKU-ULR125, KKU-ULR199 and KKU-ULR292 were identified as having high levels of stability for drought tolerance in both the 2011 and 2012 experiments, suggesting their potential for further use for rice variety improvement for drought tolerance.

scholarly journals Effect of Phosphorus Levels on Yield Components and Grain Yield of Two Nerica Varieties in Mwea

2019 ◽  
pp. 1-13
Author(s):  
Etabo Edung Mathew ◽  
N. K. Korir ◽  
J. P. Gweyi-Onyango
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Block Design ◽  
Grain Filling ◽  
Rice Farming ◽  
Rice Varieties ◽  
Randomized Complete Block Design ◽  
Grain Formation ◽  
1000 Grain Weight ◽  
Phosphorus Levels

Phosphorus is one macronutrient that commonly gets fixed and accumulates into soils after it has been in use for long, thus becoming readily unavailable to plants in subsequent years. Such scenario is ontological in Mwea where rice farming is practiced, yet this element is one main critical nutrient that plants cannot do without for they need it for root initiation, root development, photosynthesis, grain- formation, grain-filling, as well as yielding. In that view therefore, an experiment was undertaken in Mwea irrigation scheme with the aim of investigating on the influence of phosphorus levels on yield components and grain yield of Nerica 4 and 11. The experiment was laid out in a Randomized Complete Block Design in split-plot arrangement replicated thrice. Two rice varieties (Nerica 4 and Nerica 11) formed main plots and phosphorus levels (0 kg P/ha, 25 kg P/ha, 50 kg P/ha and 75 kg P/ha) formed split plots. Data was collected on appropriate parameters between week 4 and 19 after sowing at intervals of three weeks. Results demonstrated that phosphorus levels significantly influenced the 1000-grain weight and number of panicles in the tested varieties. Additionally, Grain yield mean variation was observed, where highest grain yield of 0.988 tons per hectare was produced in Nerica 4 on 50 kg P/ha in season 2, while least grain yield of 0.831 tons per hectare was still produced in the same variety on control in season 1, thus 50 kg P/ha on Nerica 4 is recommended for rice farming in Mwea. The study would be used as a body of guidelines and information for judicial, responsible, and promotion of prescribed application of phosphates in Nerica rice farming at planting for realization of higher yields between the two Nerica varieties (Nerica 4 and 11) in Mwea and with like agro ecological areas.

scholarly journals Distinguishing Rice Genotypes using Morphological, Agronomical,

2015 ◽  
Vol 34 (2) ◽  
pp. 79 ◽  
Author(s):  
Untung Susanto ◽  
Nofi Anisatun Rohmah ◽  
Made Jana Mejaya
Keyword(s):  
Ssr Markers ◽  
Block Design ◽  
Rice Variety ◽  
Morphological Characters ◽  
Snp Markers ◽  
Complete Data ◽  
Property Right ◽  
Wet Season ◽  
Rice Varieties ◽  
Rice Genotypes

<p align="LEFT">Complete data on characteristics of a rice variety is very important to  race the authenticity of the variety at the field. Sometimes a name of a variety had changed, due to the informal  seed distribution among farmers. This could become problem in the property right of the variety. Distinguishing among rice varieties using only morphological and agronomical traits are sometimes not sufficient. Currently, molecular markers such as SSR (Simple Sequence Repeats) and SNP (Single Nucleotide Polymorphism) markers have become available and are powerfull to distinguish rice genotypes. This research was aimed to distinguish nine rice varieties grown by farmers, using morphological characters (47 traits), agronomical characters (9 traits), SSR markers (12 primer pairs, related with important traits of rice plant), and 384 SNP markers, and to compare the effectiveness of each technique in distinguishing among genotypes. A field experiment was conducted in Ranca Jaya village, Patok Beusi, Subang, West Java during Wet Season (WS) of 2011/2012, using a Randomized Complete Block Design in three replications. A modified CTAB method was used to extract DNA for detection using 12 SSR markers and 384 SNP markers. The results revealed that the use of SSR markers that were linked to certain genes was more accurate than that of the SNP markers, agronomic, and morphological characters, in distinguishing differences among the 9 rice genotypes. The complete data of morphologic, agronomic, and molecular are useful to distinguish the authenticity of a variety in order to protect the intelectual property right attached on the variety.</p>

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