BIENNIAL REPORT, 1927 AND 1928 319 



sliould be repeated at about ten-day intervals to reacli cutworms which 

 migrate to the garden from outside. 



Biology and Control of the Carrot Rust Fly. (W. D. Whitcomb, Wal- 

 thatn). The flies winter as pupae in the soil and emerge early in June. 

 Many eggs are laid by the middle of the month, and the larvae are abund- 

 ant on carrots for about a month thereafter. A second generation pro- 

 duces maggots which attack the carrots from the middle of August to the 

 middle of September. Carrots planted in April or May are severely at- 

 tacked, but plantings in June are quite free from injury by the first gene- 

 ration of flies. 



Against the first generation, asphalt mulch paper, Derris compound.s, 

 corrosive sublimate and sodium fluosilicate gave very encouraging results, 

 but proved quite ineffective against the second generation. 



DEPARTMENT OF FARM MANAGEMENT 

 J. A. Foord in Charge 



Although some investigational work has always been carried on in the 

 department, and small grants had been made from Experiment Station 

 funds from time to time, the research work has been regularly organized 

 in the department only within the period covered by this report. An In- 

 vestigator was ai)i)ointed in .January and an Assistant in March 1928, as 

 noted elsewhere. 



The first project outlined and approved was on the "Competitive Status 

 of Massachusetts Farm Enterprises" and two bulletins have been pub- 

 lished, abstracts of which are given in the List of Publications. With the 

 growth and develojiment of the work it has seemed best to supersede the 

 first project by four others a little more closely in line with the needs 

 as they appear today. These are as follows: 



Enterprise Relationships and Farm Organizations on Selected Dairy 

 Farms in Western Massachusetts. (R. L. Mighell and Marian Brown). 

 This project aims to obtain from selected dairy farms basic data both on 

 dairying and on various supplementary enterprises which can be used in 

 planning the most profitable farm organization. Following a study of 

 farm management survey records, and other data, and some field study, 

 approximately 25 farms were chosen in Franklin and Berkshire Counties. 

 Inventories have been taken and records are being kept of essential items 

 of farm business including labor. 



The Place of Poultry Production on Massachusetts Farms. (R. L. Mig- 

 hell and F. H. Branch). Under this project a study and analysis has been 

 made of 400 yearly records of Massachusetts poultry operators collected 

 b\ the Extension Specialist of the Department in connection with another 

 study. The statistical method was used to determine the important 

 factors affecting profits. The average relationship between variations 

 in annual egj,- i)roduction per bird, diversity of business, rate of flock 

 reduction, i)rice, and fall egg production, and labor return, are be- 

 ing determined by correlation analysis. Publication of results may be 

 expected early in 1929. 



Types of Farming in Massachusetts, 1840-19'25. (Marian Brown). Most 

 of the census material available for this study has been compiled, to- 

 gether with non-statistical material for several leading farm enterprises. 



