Knowledge and Adoption of Drip Irrigation in Citrus Crops among Farmers ofWestern Haryana

Water is becoming increasing scare which limits agricultural development not only in Indiabut also in many parts of the world. Drip irrigation is an incredibly efficient wateringmethod that slowly delivers water directly to plant root system. The present study wasundertaken to assess the knowledge and adoption level of drip irrigation in citrus cropsamong farmers of Haryana state. Majority of respondents belonged to middle age group(51.67%), general castes (96.67%), joint families (68.33%) and having land between 4-10hectares (45.00%). It was found that majority of sampled farmers (61.67%) had high levelof knowledge while 31.67 per cent had moderate level of knowledge of drip irrigation.More number of farmers had high level of adoption (40.00%) whereas 35.00 per cent hadmedium and 25.00 per cent had low level of adoption of drip irrigation. Socio-economicfactors like income, landholding, mass media exposure, education and socio-economic statusof farmers were found significantly associated with the level of knowledge and adoptionof drip irrigation. It is concluded that more efforts are required to increase the knowledgeof farmers about drip irrigation for wider adoption of micro-irrigation technologies.

Role of Auxin and Nitrate Signaling in the Development of Root System Architecture

The plant root is an important storage organ that stores indole-3-acetic acid (IAA) from the apical meristem, as well as nitrogen, which is obtained from the external environment. IAA and nitrogen act as signaling molecules that promote root growth to obtain further resources. Fluctuations in the distribution of nitrogen in the soil environment induce plants to develop a set of strategies that effectively improve nitrogen use efficiency. Auxin integrates the information regarding the nitrate status inside and outside the plant body to reasonably distribute resources and sustainably construct the plant root system. In this review, we focus on the main factors involved in the process of nitrate- and auxin-mediated regulation of root structure to better understand how the root system integrates the internal and external information and how this information is utilized to modify the root system architecture.

Unexpected diversity among small-scale sample replicates of defined plant root compartments

Community assembly processes determine patterns of species distribution and abundance which are central to the ecology of microbiomes. When studying plant root microbiome assembly, it is typical to sample at the whole plant root system scale. However, sampling at these relatively large spatial scales may hinder the observability of intermediate processes. To study the relative importance of these processes, we employed millimetre-scale sampling of the cell elongation zone of individual roots. Both the rhizosphere and rhizoplane microbiomes were examined in fibrous and taproot model systems, represented by wheat and faba bean, respectively. Like others, we found that the plant root microbiome assembly is mainly driven by plant selection. However, based on variability between replicate millimetre-scale samples and comparisons with randomized null models, we infer that either priority effects during early root colonization or variable selection among replicate plant roots also determines root microbiome assembly.

Root-Knot Nematodes a Major Peril to Protected Cultivation System in India: Current Status and its Management

Growing of vegetable crops under protected conditions are relatively, an innovative technology and most popular among farmers throughout the country. In last few decades protected cultivation has shown potential enhancement in horticultural production. The southern root-knot nematode, Meloidogyne incognita, is an emerging nematode under protected conditions. This nematode can cause chlorosis, stunting and reduce yields associated with the induction of many root galls on host plants. Root-knot nematode severely affect the plant root system by inducing specialized feeding cells i.e., giant cells in the vascular tissues. Recently, this nematode has been considered as a worldwide menace for combat root-knot nematodes, integrated nematode management strategies such as soil solarization, biological control, organic amendment, crop rotation, field sanitation, and fumigants have been developed and successfully used in the past. Here, in this book chapter discussed on biology and life cycle, control measures and proposed future strategies to improve Megalaima incognita management under protected conditions.

Root System Analysis and Influence of Moisture on Soil Electrical Properties

This paper proposes a methodology for plant root system and soil moisture analysis through the geoelectrical prospecting method. Overall, bench and field experiments are implemented to analyze the behavior of electrical conductivity of the soil in relation to moisture content and plant root system growth. Specifically, Wenner array and lateral profiling technique are used to stratify the soil in horizontal layers, performing in-depth analysis. Millet (Pennisetum glaucum L.), bean (Phaseolus vulgaris L.) and sorghum (Sorghum bicolor L. Moench) are used to analyze the root system behavior. Results show that the soil water dynamics can be observed through soil stratification in horizontal layers and the plant root system is correlated with apparent electrical conductivity of the soil. Thus, geoelectric prospecting methods can be used as an analysis tool, both of soil moisture dynamics and of plant roots, to support decision making regarding soil and crop management.

Isolasi dan Karakterisasi Bakteri Pemacu Pertumbuhan Tanaman (Plant Growth Promoting Rhizobacteria) Asal Tanah Desa Akar-Akar, Lombok Utara

<p><strong>Plant Root Growth Promoting Bacteria or PGPR are bacteria that colonize plant rooting areas or the rhizosphere to increase the quality or quantity of plant growth. PGPR can provide dissolved phosphate for plants to be absorbed by the plant root system since 95-99% of phosphate in nature is present in insoluble form. Soil samples from different irrigation systems from Akar-akar village were isolated through serial dilution techniques and grown on NA media shown that the higher the dilution, the fewer colonies that grew on the media. Macroscopic and microscopic observations were made to see the criteria for bacteria, shown that the bacteria in the three soil samples were gram negative and was known that bacillus and cocobacillus bacteria present in the three soil samples. Coccus bacteria was found in soil without irrigation and drip-surface irrigated soil, while streptococcus bacteria was found in drip-surface and drip-subsurface irrigated soil. As many as 22 bacterial isolates were isolated and grown on Pikovskaya media, only one bacterial colony was phosphate solvent through a clear zone that grew around the bacterial colony. The bacterial colony has a phosphate dissolving index (IPF) of 250, the ratio between colony diameter and clear zone diameter was 1: 1.5.</strong></p><p><strong>Keywords – </strong><em>PGPR, Drip-surface irrigated soil, Drip-subsurface irrigated soil</em></p>

Extended Plant Metarhizobiome: Understanding Volatile Organic Compound Signaling in Plant-Microbe Metapopulation Networks

Plant rhizobiomes consist of microbes that are influenced by the physical, chemical, and biological properties of the plant root system. While plant-microbe interactions are generally thought to be local, accumulating evidence suggests that topologically disconnected bulk soil microbiomes could be linked with plants and their associated rhizospheric microbes through volatile organic compounds (VOCs).

INFLUENCE OF VARIABLE SPEED INDICATORS OF THE ROTARY HARVEST BZR-9,0 WORK ON THE SUNFLOWER INTERROW TREATMENT PERFORMANCE QUALITY

The purpose of the research is to investigate the quality of inter-row tillage with a rotary harrow depending on the speed regimes in conditions of high soil hardness.Research methods: theoretical - analysis of information resources and research results of rotary harrows; experimental field - testing of the machine in the economic conditions of LLC "Nosivka Agro", village Ploske Nosiv district of Chernihiv region with the fixation of agronomic indicators; instrumental measurements and expert evaluation; statistical - mathematical processing of the obtained indicators.Results.Experimental field studies of the influence of the speed modes of the rotary harrow BZR-9.0 on the efficiency of inter-row cultivation have been carried out.The nomenclature of quality criteria and their achieved level have been established by expert evaluation.It has been analytically established that the rotary harrow mulches the topsoil well, destroys the soil crust, loosens the soil and destroys filamentous weeds, thus creating ideal conditions for the initial development of the plant root system and providing a strong start to their growth. Conclusions. Rotary harrows, widely available on the Ukrainian market, are increasingly in demand as an effective tool for weed control and soil crust destruction in order to improve aeration and water saturation of crops in conditions of increased soil dryness. Theoretical analysis of information sources confirms that needle harrows can be successfully used for continuous and inter-row cultivation of crops in small and medium-sized farms. The physical parameters obtained as a result of experimental researches testify that with change of speed from 9 km / h to 15 km / h the harrow tooth rotary BZR-9,0 in interrow spacing with a protective zone of 11 cm provides qualitative cultivation of soil with a sufficient level of agrotechnical indicators - degree of destruction. soil crust in the range of 91-98 %, and the percentage of damaged plants is at the level of excellent and satisfactory values. There are no undamaged areas of crust with an area of more than 5 cm2, which significantly impede water and air permeability.

Conditions for the emergence of circumnutations in plant roots

The plant root system shows remarkably complex behaviors driven by environmental cues and internal dynamics, whose interplay remains largely unknown. A notable example is circumnutation growth movements, which are growth oscillations from side to side of the root apex. Here we describe a model capable of replicating root growth behaviors, which we used to analyze the role of circumnuntations, revealing their emergence I) under gravitropic stress, as a combination of signal propagation and sensitivity to the signal carriers; II) as a result of the interplay between gravitropic and thigmotropic responses; and III) as a behavioral strategy to detect and react to resource gradients. The latter function requires the presence of a hypothetical internal oscillator whose parameters are regulated by the perception of environmental resources.