Search Results

You are looking at 1 - 10 of 15 items for :

  • "application systems" x
  • All content x
Clear All
Full access

Charles L. Webber III, James W. Shrefler, and Merritt J. Taylor

Corn gluten meal (CGM) is a non-selective preemergence or preplant-incorporated herbicide that inhibits root development, decreases shoot length, and reduces plant survival. The development of a mechanized application system for the banded placement of CGM between crop rows (seed row not treated) has increased its potential use in organic vegetable production, especially in direct-seeded vegetables. The objective of this research was to determine the impact of CGM applications (formulations, rates, incorporation, and banded applications) on direct-seeded squash (Cucurbita pepo) plant survival and yields. Neither CGM formulation (powdered or granulated) nor incorporation method (incorporated or non-incorporated) resulted in significant differences in plant survival or squash yields. When averaged across all other factors (formulations, incorporation method, and banding), CGM rates of 250 to 750 g·m−2 reduced squash survival from 70% to 44%, and squash yields from 6402 to 4472 kg·ha−1. However, the banded application (CGM placed between rows) resulted in significantly greater crop safety (75% survival) and yield (6402 kg·ha−1) than the broadcast (non-banded) applications (35% survival and 4119 kg·ha−1 yield). It was demonstrated that banded applications of CGM can be useful in direct-seeded squash production and other organic direct-seeded vegetables.

Full access

Maren J. Mochizuki, Oleg Daugovish, Miguel H. Ahumada, Shawn Ashkan, and Carol J. Lovatt

installation or removal of an application system. Plants may be maintained even longer in other production areas such as Ontario, where primocane varieties were successfully fruited for up to 3 years in greenhouses ( Dale et al., 2003 ), or Michigan and the

Full access

Ronnie W. Heiniger

New technologies such as differential global positioning systems (DGPS) and geographical information systems (GIS) are making it possible to manage variability in soil properties and the microenvironment within a field. By providing information about where variability occurs and the patterns that exist in crop and soil properties, DGPS and GIS technologies have the potential of improving crop management practices. Yield monitoring systems linked to DGPS receivers are available for several types of horticultural crops and can be used in variety selection and/or improving crop management. Precision soil sampling and remote sensing technologies can be used to scout for infestations of insects, diseases, or weeds, to determine the distribution of soil nutrients, and to monitor produce quality by measuring crop vigor. Combined with variable rate application systems, precision soil sampling and remote sensing can help direct fertilizer, herbicide, pesticide, and/or fungicide applications to only those regions of the field that require soil amendments or are above threshold levels. This could result in less chemical use and improved crop performance. As with any information driven system, the data must be accurate, inexpensive to collect, and, most importantly, must become part of a decision process that results in improvements in crop yield, productivity, and/or environmental stewardship.

Full access

Marco Fontanelli, Michel Pirchio, Christian Frasconi, Luisa Martelloni, Michele Raffaelli, Andrea Peruzzi, Nicola Grossi, Lisa Caturegli, Simone Magni, Monica Gaetani, and Marco Volterrani

maneuverability and reduce soil compaction. The power train delivered 44 kW of maximum power. The machine was equipped with both a steam generation and steam application system. The steam generation system consisted of a diesel steam generator with a power of 1507

Full access

Andrea Luvisi, Alessandra Panattoni, Roberto Bandinelli, Enrico Rinaldelli, Mario Pagano, Barbara Gini, Giorgio Manzoni, and Enrico Triolo

distributed rich Internet application system and was installed on a remote server, while flash technology was used for clients. The main software used was Java (Sun Microsystems, Santa Clara, CA) and Adobe Flex (Adobe Systems, San Jose, CA). Image analysis and

Full access

Sally M. Schneider and Bradley D. Hanson

application systems, and cropping systems, as well as changes in state and federal regulations related to nursery stock certification and environmental quality are needed before this industry can completely transition away from MB use. Literature cited Barker

Full access

Dalong Zhang, Yuping Liu, Yang Li, Lijie Qin, Jun Li, and Fei Xu

theoretical analysis and experimental evidence, VPD regulation faced dilemmas when the theory was applied in agricultural practice. Mechanical application systems such as the pad-fan system or the fogging system were necessary to facilitate VPD control, which

Full access

Arnold W. Schumann

rate liquid application system for supplemental N supply to corn crops, thus improving the crop N status and increasing the yield over most plots. Elings et al. (2004) used plant sensors for photosynthesis, radiation interception and fresh growth rate

Full access

Craig D. Stanley and Gurpal Toor

respect to scheduling water and nutrient applications, system maintenance, and repair can greatly affect efficient water and nutrient use. Many types of water and nutrient BMPs have been developed over the years to give producers options to achieve

Full access

Benedict C. Posadas, Patricia R. Knight, Randal Y. Coker, Christine H. Coker, Scott A. Langlois, and Glenn Fain

% of greenhouses used mechanized fertilizer application systems ( Table 2 ). The application of pesticides was mechanized in 29% of nurseries and 64% of greenhouses. About 56% of nurseries and 78% of greenhouses reported that the application and