scholarly journals Iron Stress in Crop Plants and Ways to Overcome it

2021 ◽  
Vol 12 (1) ◽  
pp. i-iii
Author(s):  
Rajendra Prasad ◽  
◽  
Yashbir Singh Shivay ◽  
Keyword(s):  
Upland Rice ◽  
Ferrous Sulphate ◽  
Calcareous Soils ◽  
Field Application ◽  
Crop Plants ◽  
Aerobic Rice ◽  
Iron Stress ◽  
Organic Manures ◽  
Edta Solution ◽  
The Times

Iron (Fe) stress is encountered by many crops in calcareous soils with pH above 8.0, which are abundant in India. Most of the times Fe stress goes unnoticed however anyway it affects yield. Aerobic rice and upland rice nurseries also exhibit Fe stress. In many cases frequent adequate irrigation solves the problem. In Fe deficient areas adequate organic manures must be applied, while preparing the field. Application of elemental S and S-containing fertilizers also helps in overcoming Fe stress in plants. In case of serious Fe-stress, ferrous sulphate or Fe-EDTA solution can be sprayed, which effectively overcome the Fe stress problem.

scholarly journals RESPONSE OF WHEAT GROWN ON SANDY CALCAREOUS SOILS TO ORGANIC MANURES AND SULFUR APPLICATION

2011 ◽  
Vol 89 (3) ◽  
pp. 785-807
Author(s):  
FARIDA H. BADAWY ◽  
MOHAMED M.M. AHMED ◽  
HAMDIA M. EL-REWAINY ◽  
MOSTAFA A. ALI
Keyword(s):  
Calcareous Soils ◽  
Organic Manures

scholarly journals Mathematical Literacy Movement for Mathematics Teachers in SDN Duri Kepa 05 Pagi to improve Learning Motivation [Gerakan Literasi Matematika Bagi Guru Matematika di SDN Duri Kepa 05 Pagi untuk meningkatkan Motivasi Belajar siswa]

2019 ◽  
Vol 2 ◽  
pp. 732
Author(s):  
Alberth Supriyanto Manurung ◽  
Abdul Halim
Keyword(s):  
Community Service ◽  
Mathematics Teachers ◽  
Early Morning ◽  
Field Application ◽  
Learning Motivation ◽  
Mathematical Literacy ◽  
Science Of Logic ◽  
Mathematics Literacy ◽  
Service Activity ◽  
The Times

Mathematics is the science of logic regarding shapes, structures, quantities, and concepts related to each other. Learning Mathematics in the form of a Mathematical Literacy Movement is not just about increasing curiosity but always developing according to the times, Mathematics subjects aim to instill and develop the process of counting on the teacher. Based on observations in SDN Duri Kepa 05 Early morning in the learning process the teacher still uses conventional teaching methods or teacher-centered as information givers, with the mathematics literacy movement expected to improve the good quality of each concept in the form of problem application. The purpose of this community service activity is to increase learning motivation by applying the Mathematical Literacy Movement in schools and to increase knowledge which changes at any time. The subject of this community service is all Mathematics Teachers in SDN Duri Kepa 05 Pagi. Method of approach to support the realization of Education and Training Understanding of mathematics literacy movements for mathematics teachers includes Theoretical approach (Workshop), Field application approaches, Evaluation approaches. In this activity, it is expected that partner participation is at least 10 Participants registered, and those who attend the workshop are expected to be 100%. In the field guide, it is expected to be 100% guided.

scholarly journals Studies of Water Economy in Crop Plants. : (I) The relation between temperature and water economy in oats and upland rice.

1955 ◽  
Vol 23 (4) ◽  
pp. 239-240
Author(s):  
Minoru MATSUBAYASHI ◽  
Koichi KAKINUMA ◽  
Shoichi MURAKAMI
Keyword(s):  
Upland Rice ◽  
Crop Plants ◽  
Water Economy

Towards the Reliable Prediction of Time to Flowering in Six Annual Crops. I. The Development of Simple Models for Fluctuating Field Environments

1991 ◽  
Vol 27 (1) ◽  
pp. 11-31 ◽  
Author(s):  
R. J. Summerfield ◽  
E. H. Roberts ◽  
R. H. Ellis ◽  
R. J. Lawn
Keyword(s):  
Environmental Factors ◽  
Crop Plants ◽  
Crop Phenology ◽  
Reliable Prediction ◽  
Statistical Procedures ◽  
Annual Crops ◽  
The Times ◽  
Simple Models

SUMMARYDespite numerous altempts, the development of generalixed models capable of accurate predictions of the times from sowing to flowering (f) of crop plants in field environments has remained elusive. Models which seek to correlate ;ʃ with various states of environmental factors such as photoperiod, P, and temperature, T, using formal statistical procedures arc often complex. Here, we describe a family of photothermal responses (involving unambiguous parameters and limits) which quantify the linear, non-interacting effects of P and T not on ʃ but on 1/ʃ, i.e. on the rate of progress towards flowering. Based on these relations we suggest that the modelling of crop phenology will be simplified, more reliable and more biologically plausible.

scholarly journals Examining Short-Term Responses to a Long-Term Problem: RNA-Seq Analyses of Iron Deficiency Chlorosis Tolerant Soybean

2020 ◽  
Vol 21 (10) ◽  
pp. 3591
Author(s):  
Adrienne N. Moran Lauter ◽  
Lindsay Rutter ◽  
Dianne Cook ◽  
Jamie A. O’Rourke ◽  
Michelle A. Graham
Keyword(s):  
Iron Deficiency ◽  
Stress Responses ◽  
Crop Production ◽  
Calcareous Soils ◽  
The United States ◽  
Iron Stress ◽  
Iron Deficiency Chlorosis ◽  
Genome Expression ◽  
Whole Genome Expression ◽  
Over Time

Iron deficiency chlorosis (IDC) is a global crop production problem, significantly impacting yield. However, most IDC studies have focused on model species, not agronomically important crops. Soybean is the second largest crop grown in the United States, yet the calcareous soils across most of the upper U.S. Midwest limit soybean growth and profitability. To understand early soybean iron stress responses, we conducted whole genome expression analyses (RNA-sequencing) of leaf and root tissue from the iron efficient soybean (Glycine max) cultivar Clark, at 30, 60 and 120 min after transfer to iron stress conditions. We identified over 10,000 differentially expressed genes (DEGs), with the number of DEGs increasing over time in leaves, but decreasing over time in roots. To investigate these responses, we clustered our expression data across time to identify suites of genes, their biological functions, and the transcription factors (TFs) that regulate their expression. These analyses reveal the hallmarks of the soybean iron stress response (iron uptake and homeostasis, defense, and DNA replication and methylation) can be detected within 30 min. Furthermore, they suggest root to shoot signaling initiates early iron stress responses representing a novel paradigm for crop stress adaptations.

Potassium uptake by higher plants: From field application to membrane transport

2005 ◽  
Vol 53 (4) ◽  
pp. 443-459 ◽  
Author(s):  
S. Kant ◽  
P. Kant ◽  
U. Kafkafi
Keyword(s):  
Plant Growth ◽  
Developmental Stages ◽  
Higher Plants ◽  
Field Application ◽  
Crop Plants ◽  
Growth And Yield ◽  
Uptake System ◽  
Charge Balance ◽  
Growth Changes ◽  
Plant Life Cycle

Potassium (K+) is a crucial nutrient element for higher plants and plays vital roles in several cellular processes includingturgor regulation, stomatal movement, protein synthesis and charge balance. The requirement of K+for plant growth changes with the developmental stages and its uptake pattern varies among crop plants. Most annual crop plants take up a large proportion of their K+requirement in the initial vegetative growth stage. A deficiency of K+during this period may make the plant susceptible to various stresses. Therefore, the timely application of K+to the plant rhizosphere is an important factor for achieving better plant growth and yield. Plants take up K+by active and passive transport. Electrophysiological and molecular studies done during the last two decades have characterized the active K+ uptake mechanisms (high and low affinity K+ uptake systems) and have identified the genes involved in these mechanisms. The knowledge of K+uptake during the plant life cycle and of the activation of the K+uptake system by the presence of a certain concentration of K+in the soil solution would certainly help in planning the rate and time of K+application. Therefore, the work done on the pattern of K+uptake during plant growth and the mechanism involved in its uptake is reviewed here.

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