P. R. Hobbs

发表

Seeding openers and slot shape.

C. J. Baker, K. E. Saxton, W. R. Ritchie, 2006 .

Comparing surface disturbance and low-disturbance disc openers.

W. R. Ritchie, W. C. T. Chamen, D. C. Reicosky, 2006 .

No Tillage Seeding in Conservation Agriculture

C. J. Baker, K. E. Saxton, W. R. Ritchie, 2006 .

Seed depth, placement and metering.

W. R. Ritchie, W. C. T. Chamen, D. C. Reicosky, 2006 .

Increasing Wheat Yields Sustainably through Agronomic Means

P. R. Hobbs, K. D. Sayre, J. I. Ortiz-Monasterio, 1998 .

Needed: a new paradigm for technology adoption in developing countries.

P. R. Hobbs, M. VanGessel, 2003 .

No-tillage drill and planter design - small scale machines

W. R. Ritchie, W. C. T. Chamen, D. C. Reicosky, 2006 .

Yield and Soil Fertility Trends in a 20‐Year Rice–Rice–Wheat Experiment in Nepal

P. R. Hobbs, Jagdish K. Ladha, Sushil Pandey, 2002 .

Adopting conservation agriculture in the rice-wheat system of the Indo-Gangetic Plains: new opportunities for saving water

P. R. Hobbs, Jagdish K. Ladha, R. Naresh, 2002 .

Wheat and rice in Karnal and Kurukshetra Districts, Haryana, India : farmers practices, problems, and an agenda for action

M. L. Morris, L. W. Harrington, P. R. Hobbs, 1993 .

Direct-seeding and reduced-tillage options in the rice-wheat systems of the Indo-Gangetic Plains of South Asia.

P. R. Hobbs, Yadvinder Singh, J. G. Lauren, 2002 .

Wheat in the cotton-wheat farming systems of the punjab : implications for research and extension

P. R. Hobbs, Derek Byerlee, Abdul Majid, 1986 .

Reduced and zero-tillage options for establishment of wheat after rice in South Asia

P. R. Hobbs, P. Hobbs, G. S. Giri, 1997 .

Rice wheat cropping systems in the Indo-Gangetic plains: issues of water productivity in relation to new resource conserving technologies

P. R. Hobbs, R. K. Gupta, P. Hobbs, 2003 .

Sustainable agriculture and the international rice-wheat system.

Rattan Lal, P. R. Hobbs, Norman Uphoff, 2004 .